NASA’s Planning on Visiting the Water Worlds of the Solar System and Beyond

Next stop the ocean worlds of Enceladus and Europa

This illustration shows Cassini diving through the Enceladus plume in 2015. New ocean world discoveries from Cassini and Hubble will help inform future exploration and the broader search for life beyond Earth.
Credits: NASA/JPL-Caltech

Space news (planetary science: water worlds of the solar system; Enceladus and Europa) – planets and moons around the solar system and exoplanets across the universe covered with water

This graphic illustrates how scientists on NASA’s Cassini mission think water interacts with rock at the bottom of the ocean of Saturn’s icy moon Enceladus, producing hydrogen gas (H2).
The Cassini spacecraft detected the hydrogen in the plume of gas and icy material spraying from Enceladus during its deepest and last dive through the plume on Oct. 28, 2015. Cassini also sampled the plume’s composition during previous flybys, earlier in the mission. From these observations, scientists have determined that nearly 98 percent of the gas in the plume is water vapor, about 1 percent is hydrogen, and the rest is a mixture of other molecules including carbon dioxide, methane, and ammonia.
The graphic shows water from the ocean circulating through the seafloor, where it is heated and interacts chemically with the rock. This warm water, laden with minerals and dissolved gasses (including hydrogen and possibly methane) then pours into the ocean creating chimney-like vents.
The hydrogen measurements were made using Cassini’s Ion and Neutral Mass Spectrometer, or INMS, instrument, which sniffs gasses to determine their composition.
The finding is an independent line of evidence that hydrothermal activity is taking place in the Enceladus ocean. Previous results from Cassini’s Cosmic Dust Analyzer instrument, published in March 2015, suggested hot water is interacting with rock beneath the ocean; the new findings support that conclusion and indicate that the rock is reduced in its geochemistry. With the discovery of hydrogen gas, scientists can now conclude that there is a source of chemical free energy in Enceladus’ ocean.
The Cassini mission is a cooperative project of NASA, ESA (the European Space Agency) and the Italian Space Agency. The Jet Propulsion Laboratory, a division of Caltech in Pasadena, manages the mission for NASA’s Science Mission Directorate, Washington. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The Ion and Neutral Mass Spectrometer was designed and built by NASA Goddard Space Flight Center, Greenbelt, Maryland; the team is based at Southwest Research Institute (SwRI) in San Antonio.
For more information about the Cassini mission, visit http://www.nasa.gov/cassini and http://saturn.jpl.nasa.gov.
Image Credit: NASA.

The solar system’s awash in water! NASA missions have provided verifiable facts showing ocean worlds and moons exist in our solar system and beyond, other than Earth. Planetary bodies where water is locked in a frozen embrace and even flowing beneath miles of ice. Liquid water exobiologists are keen to explore for life forms they would love to meet and get to know a little better during the next phase of the human journey to the beginning of space and time. Watch this YouTube video on NASA’s search for life on the ocean worlds of the solar system.

Best Evidence Yet for Reoccurring Water Vapor Plumes Erupting from Jupiter’s Moon
When Galileo discovered Jupiter’s moon Europa in 1610, along with three other satellites whirling around the giant planet, he could have barely imagined it was such a world of wonder.
This revelation didn’t happen until 1979 when NASA’s Voyager 1 and 2 flew by Jupiter and found evidence that Europa’s interior, encapsulated under a crust of ice, has been kept warm over billions of years. The warmer temperature is due to gravitational tidal forces that flex the moon’s interior — like squeezing a rubber ball — keeping it warm. At the time, one mission scientist even speculated that the Voyagers might catch a snapshot of geysers on Europa.
Such activity turned out to be so elusive that astronomers had to wait over three decades for the peering eye of Hubble to monitor the moon for signs of venting activity. A newly discovered plume seen towering 62 miles above the surface in 2016 is at precisely the same location as a similar plume seen on the moon two years earlier by Hubble. These observations bolster evidence that the plumes are a real phenomenon, flaring up intermittently in the same region on the satellite.
The location of the plumes corresponds to the position of an unusually warm spot on the moon’s icy crust, as measured in the late 1990s by NASA’s Galileo spacecraft. Researchers speculate that this might be circumstantial evidence for material venting from the moon’s subsurface. The material could be associated with the global ocean that is believed to be present beneath the frozen crust. The plumes offer an opportunity to sample what might be in the ocean, in the search for life on that distant moon. Credits: NASA/JPL

Papers published by the journal Science and written by Cassini mission scientists and researchers working with the Hubble Space Telescope indicate hydrogen gas believed pouring from the subsurface ocean of Enceladus could potentially provide chemical energy life could use to survive and evolve. Watch this YouTube video called “NASA: Ingredients for Life at Saturn’s moon Enceladus“, it shows the proof scientists used to come to these conclusions. Their work provides new insights concerning possible oceans of water on moons of Jupiter and Saturn and other ocean moons in the solar system and beyond. 

Best Evidence Yet for Reoccurring Water Vapor Plumes Erupting from Jupiter’s Moon
When Galileo discovered Jupiter’s moon Europa in 1610, along with three other satellites whirling around the giant planet, he could have barely imagined it was such a world of wonder.
This revelation didn’t happen until 1979 when NASA’s Voyager 1 and 2 flew by Jupiter and found evidence that Europa’s interior, encapsulated under a crust of ice, has been kept warm over billions of years. The warmer temperature is due to gravitational tidal forces that flex the moon’s interior — like squeezing a rubber ball — keeping it warm. At the time, one mission scientist even speculated that the Voyagers might catch a snapshot of geysers on Europa.
Such activity turned out to be so elusive that astronomers had to wait over three decades for the peering eye of Hubble to monitor the moon for signs of venting activity. A newly discovered plume seen towering 62 miles above the surface in 2016 is at precisely the same location as a similar plume seen on the moon two years earlier by Hubble. These observations bolster evidence that the plumes are a real phenomenon, flaring up intermittently in the same region on the satellite.
The location of the plumes corresponds to the position of an unusually warm spot on the moon’s icy crust, as measured in the late 1990s by NASA’s Galileo spacecraft. Researchers speculate that this might be circumstantial evidence for material venting from the moon’s subsurface. The material could be associated with the global ocean that is believed to be present beneath the frozen crust. The plumes offer an opportunity to sample what might be in the ocean, in the search for life on that distant moon. Credits: NASA/JPL

“This is the closest we’ve come, so far, to identifying a place with some of the ingredients needed for a habitable environment,” said Thomas Zurbuchen, associate administrator for NASA’s Science Mission Directorate at Headquarters in Washington. ”These results demonstrate the interconnected nature of NASA’s science missions that are getting us closer to answering whether we are indeed alone or not.”

Portrait of Thomas Zurbuchen taken on Monday, October 17, 2016, at NASA Headquarters in Washington. Photo Credit: (NASA/Aubrey Gemignani)

Researchers believe they have found evidence indicating hydrogen gas could be pouring out of hydrothermal vents on the floor of Saturn’s moon Enceladus and into these oceans of water. Any microbes existing in these distant waters could use this gas as a form of chemical energy to operate biological processes. By combining hydrogen with carbon dioxide dissolved in this ocean of water in a chemical reaction called methanogenesis, geochemists think methane could be produced which could act as the basis of a tree of life similar to the one observed on Earth. 

Dramatic plumes, both large and small, spray water ice and vapor from many locations along the famed “tiger stripes” near the south pole of Saturn’s moon Enceladus. The tiger stripes are four prominent, approximately 84-mile- (135-kilometer-) long fractures that cross the moon’s south polar terrain.
This two-image mosaic is one of the highest resolution views acquired by Cassini during its imaging survey of the geyser basin capping the southern hemisphere of Saturn’s moon Enceladus. It clearly shows the curvilinear arrangement of geysers, erupting from the fractures. .From left to right, the fractures are Alexandria, Cairo, Baghdad, and Damascus.
As a result of this survey, 101 geysers were discovered: 100 have been located on one of the tiger stripes (PIA17188), and the three-dimensional configurations of 98 of these geysers have also been determined (PIA17186). The source location of the remaining geyser could not be definitively established. These results, together with those of other Cassini instruments, now strongly suggest that the geysers have their origins in the sea known to exist beneath the ice underlying the south polar terrain.
These findings from the imaging survey, of which the two images composing this mosaic are a part, were presented in a paper by Porco, DiNino, and Nimmo and published in the online version of the Astronomical Journal in July 2014: http://dx.doi.org/10.1088/0004-6256/148/3/45.
A companion paper, by Nimmo et al., is available at http://dx.doi.org/10.1088/0004-6256/148/3/46.
The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency, and the Italian Space Agency. NASA’s Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA’s Science Mission Directorate, Washington. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.
For more information about the Cassini-Huygens mission visit http://saturn.jpl.nasa.gov and http://www.nasa.gov/cassini. The Cassini imaging team homepage is at http://ciclops.org.
Photojournal notes: This image has been rotated 180 degrees from its original orientation published on February 2, 2010.
Image Credit:
NASA/JPL/Space Science Institute

On Earth, this process is thought to be at the root of the tree of life, and could even be essential, critical to the origin of life on our little blue dot. Life existing on our planet requires three main ingredients, liquid water, a source of energy for metabolic processes, and specific chemical ingredients to develop and continue to thrive. This study shows Enceladus could have the right ingredients for life to exist, but planetary scientists and exobiologists are looking for evidence of the presence of sulfur and phosphorus. 

This set of images from NASA’s Cassini mission shows how the gravitational pull of Saturn affects the amount of spray coming from jets at the active moon Enceladus. Enceladus has the most spray when it is farthest away from Saturn in its orbit (inset image on the left) and the least spray when it is closest to Saturn (inset image on the right).
Water ice and organic particles gush out of fissures known as “tiger stripes” at Enceladus’ south pole. Scientists think the fissures are squeezed shut when the moon is feeling the greatest force of Saturn’s gravity. They theorize the reduction of that gravity allows the fissures to open and release the spray. Enceladus’ orbit is slightly closer to Saturn on one side than the other. A simplified version of that orbit is shown as a white oval.
Scientists correlate the brightness of the Enceladus plume to the amount of solid material being ejected because the fine grains of water ice in the plume are very bright when lit from behind. Between the dimmest and brightest images, they detected a change of about three to four times in brightness, approximately the same as moving from a dim hallway to a brightly lit office.
This analysis is the first clear finding that shows the jets at Enceladus vary in a predictable manner. The background image is a mosaic made from data obtained by Cassini’s imaging science subsystem in 2006. The inset image on the left was obtained on Oct. 1, 2011. The inset image on the right was obtained on Jan. 30, 2011.
A related image, PIA17039, shows just the Enceladus images. The Saturn system mosaic was created from data obtained by Cassini’s imaging cameras in 2006.
The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency, and the Italian Space Agency. NASA’s Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA’s Science Mission Directorate, Washington, DC. The Cassini orbiter was designed, developed and assembled at JPL. The visual and infrared mapping spectrometer was built by JPL, with a major contribution by the Italian Space Agency. The visual and infrared mapping spectrometer science team is based at the University of Arizona, Tucson.
For more information about the Cassini-Huygens mission, visit http://www.nasa.gov/cassini and http://saturn.jpl.nasa.gov/.
Image Credit:
NASA/JPL-Caltech/University of Arizona/Cornell/SSI

Previous data shows the rocky core of this moon is similar to meteorites containing these two elements, so they’re thought to be chemically similar in nature, and scientists are looking for the same chemical ingredients of life found on Earth, primarily carbon, nitrogen, oxygen, and of course hydrogen, phosphorus, and sulphur.

Linda Spilker
Cassini Project Scientist. Credits: NASA

“Confirmation that the chemical energy for life exists within the ocean of a small moon of Saturn is an important milestone in our search for habitable worlds beyond Earth,” said Linda Spilker, Cassini project scientist at NASA’s Jet Propulsion Laboratory (JPL) in Pasadena, California.

This illustration shows NASA’s Cassini spacecraft about to make one of its dives between Saturn and its innermost rings as part of the mission’s grand finale.
Cassini will make 22 orbits that swoop between the rings and the planet before ending its mission on Sept. 15, 2017, with a final plunge into Saturn. The mission team hopes to gain powerful insights into the planet’s internal structure and the origins of the rings, obtain the first-ever sampling of Saturn’s atmosphere and particles coming from the main rings, and capture the closest-ever views of Saturn’s clouds and inner rings.
During its time at Saturn, Cassini has made numerous dramatic discoveries, including a global ocean that showed indications of hydrothermal activity within the icy moon Enceladus, and liquid methane seas on its moon Titan.
The Cassini mission is a cooperative project of NASA, ESA (the European Space Agency) and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA’s Science Mission Directorate, Washington.
For more information about the Cassini-Huygens mission, visit http://www.nasa.gov/cassini and http://saturn.jpl.nasa.gov.
Image Credit: NASA/JPL-Caltech

Cassini detected hydrogen in plumes of gas and frozen matter spewing from Enceladus during the spacecraft’s deepest pass over its surface on October 28, 2015. This combined with previous data obtained by Cassini’s Ion and Neutral Mass Spectrometer (INMS) during earlier flybys around 2005, helped scientists determine that nearly 98 percent of the material spraying from the surface of the moon is water. The remaining two percent is thought to be around 1 percent hydrogen with some carbon dioxide, methane, ammonia and assorted unknown molecules in the mix. 

Cassini has shown us two independent detections of possible water spewing from the surface of Enceladus. NASA and its partners are currently looking over proposals to send spacecraft to determine if there is an ocean of water beneath its surface by taking a sample. The Europa Life Finder (ELF) is the proposal NASA’s seriously looking at undertaking at this point, but reports indicate a few other proposals are also being discussed. We’ll provide additional information on other proposals as they’re released to media outlets.

“Although we can’t detect life, we’ve found that there’s a food source there for it. It would be like a candy store for microbes,” said Hunter Waite, lead author of the Cassini study.

Two different observations of possible plumes of water spraying from the icy surface of Saturn’s moon Enceladus provides proof hydrothermal activity is occurring beneath. Geophysicists believe hot water is combining chemically with rock and other matter at the bottom of an ocean of water underneath its icy surface to produce hydrogen gas. Hydrogen gas exobiologists think could be used as energy, food of a sort, to sustain life forms exobiologists want to meet and learn more about. A meeting that would change our place in the cosmos, the way we think about the universe, and reality.

Looking for an interplanetary vacation destination? Consider a visit to Europa, one of the Solar System’s most tantalizing moons. Ice-covered Europa follows an elliptical path in its 85-hour orbit around our ruling gas giant Jupiter. Heat generated from strong tidal flexing by Jupiter’s gravity keeps Europa’s salty subsurface ocean liquid all year round. That also means even in the absence of sunlight Europa has energy that could support simple life forms. Unfortunately, it is currently not possible to make reservations at restaurants on Europa, where you might enjoy a dish of the local extreme shrimp. But you can always choose another destination from Visions of the Future.

Astronomers and researchers working with the Hubble Space Telescope in 2016 reported on an observation of a possible plume erupting from the icy surface of Europa in the same general location Hubble observed a possible plume in 2014. This location also corresponds to the unusually warm region with cracks in the icy surface observed by NASA’s Galileo spacecraft back in the 1990s. This provides evidence this phenomenon could be periodic, intermittent in this region of the moon. Mission planners are looking at this region as a possible location to obtain a sample of water erupting from a possible ocean of water beneath its icy surface. Watch this video on Europa.

Estimates of the size of this most recently observed plume indicate it rose about 62 miles (~100 kilometers) from the surface of Europa, while the plume in 2014 only reached a height of around 30 miles (50 kilometers). 

William Sparks
Space Telescope Science Institute. Credits: Space Science Institute/NASA/JPL

“The plumes on Enceladus are associated with hotter regions, so after Hubble imaged this new plume-like feature on Europa, we looked at that location on the Galileo thermal map. We discovered that Europa’s plume candidate is sitting right on the thermal anomaly,” said William Sparks of the Space Telescope Science Institute in Baltimore, Maryland. Sparks led the Hubble plume studies in both 2014 and 2016.

One interesting thought’s the plumes and the hot spot is somehow linked. If this is the case, it could mean the vented water’s falling onto the surface of the moon, which would change the structure and chemistry of the surface grains and allow them to retain heat longer than the surrounding region. This location would be a great place to search for the ingredients of life and a possible entry point into an ocean of water beneath.

NASA’s Europa Clipper mission is being designed to fly by the icy Jovian moon multiple times and investigate whether it possesses the ingredients necessary for life.
Credits: NASA/JPL-Caltech/SETI Institute

These observations by the Hubble Space Telescope and future looks enable future space missions to Europa and other ocean worlds in the solar system. Specifically, laying the groundwork for NASA’s Europa Clipper mission, which is set for a launch sometime in the 2020s. 

James Green: Director of Planetary Science, NASA Headquarters. Credits: NASA

“If there are plumes on Europa, as we now strongly suspect, with the Europa Clipper we will be ready for them,” said Jim Green, Director of Planetary Science, at NASA Headquarters.

NASA has indicated they’re looking to identify a possible site with persistent, intermittent plume activity as a target location for a mission to Europa to explore using its powerful suite of science instruments. Another team’s currently at work on a powerful ultraviolet camera to add to the Europa Clipper that would offer data similar to that provided by the Hubble Space Telescope, while some members of the Cassini team are working on a very sensitive, next generation INMS instrument to put on the spacecraft. 

Water’s the story of life on Earth! Science has shown it played and plays the main part in the birth, evolution, and sustenance of life on Earth. 

NASA’s planning on taking the human journey to the beginning of space and time to the ocean worlds of the solar system during the decades ahead. To search for the ingredients of life and even possibly simple one-celled life forms, of an unknown type. We plan on going along for the ride to have a look for ourselves and we hope to see your name on the ship manifest. We’ll save a seat for you.

Join the human journey to the beginning of space and time by taking part in NASA’s Backyard Worlds: Planet 9. Participants take part in the search for hidden worlds between Neptune and Proxima Centauri.

NASA’s and FEMA are currently tracking the progress of a 300 to 800 ft asteroid they think has around a 2 percent chance of hitting the Earth around September 20, 2020.

Planetary scientists searching the Red Planet for signs of past and present water believe they have found evidence indicating Mars once was a lot wetter and a possible location for the evolution of life.

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Europa Spacecraft

Set to blast off sometime in the 2020s

This artist’s rendering shows NASA’s Europa mission spacecraft, which is being developed for a launch sometime in the 2020s. This view shows the spacecraft configuration, which could change before launch, as of early 2016.
The mission would place a spacecraft in orbit around Jupiter in order to perform a detailed investigation of the giant planet’s moon Europa — a world that shows strong evidence for an ocean of liquid water beneath its icy crust and which could host conditions favorable for life. The highly capable, radiation-tolerant spacecraft would enter into a long, looping orbit around Jupiter to perform repeated close flybys of Europa.
The concept image shows two large solar arrays extending from the sides of the spacecraft, to which the mission’s ice-penetrating radar antennas are attached. A saucer-shaped high-gain antenna is also side mounted, with a magnetometer boom placed next to it. On the forward end of the spacecraft (at left in this view) is a remote-sensing palette, which houses the rest of the science instrument payload.
The nominal mission would perform at least 45 flybys of Europa at altitudes varying from 1,700 miles to 16 miles (2,700 kilometers to 25 kilometers) above the surface.
This view takes artistic liberty with Jupiter’s position in the sky relative to Europa and the spacecraft. Credits: NASA/JPL/ESA

Space news (The search for life beyond Earth) – An artist’s rendition of the Europa spacecraft orbiting Jupiter

This 12-frame mosaic provides the highest resolution view ever obtained of the side of Jupiter’s moon Europa that faces the giant planet. It was obtained on Nov. 25, 1999 by the camera onboard the Galileo spacecraft, a past NASA mission to Jupiter and its moons which ended in 2003. NASA will announce today, Tuesday, May 26, the selection of science instruments for a mission to Europa, to investigate whether it could harbor conditions suitable for life. The Europa mission would conduct repeated close flybys of the small moon during a three-year period.
Numerous linear features in the center of this mosaic and toward the poles may have formed in response to tides strong enough to fracture Europa’s icy surface. Some of these features extend for over 1,500 kilometers (900 miles). Darker regions near the equator on the eastern (right) and western (left) limb may be vast areas of chaotic terrain. Bright white spots near the western limb are the ejecta blankets of young impact craters.
North is to the top of the picture and the sun illuminates the surface from the left. The image, centered at 0 latitude and 10 longitude, covers an area approximately 2,500 by 3,000 kilometers. The finest details that can discerned in this picture are about 2 kilometers across (about 1,550 by 1,860 miles). The images were taken by Galileo’s camera when the spacecraft was 94,000 kilometers (58,000 miles) from Europa.
Image Credit: NASA/JPL/University of Arizona

NASA’s Jet Propulsion Laboratory released this artists rendering of the Europa spacecraft, which is set to head to Jupiter sometime in the 2020s. The Europa Mission spacecraft configuration in early 2016 is shown in this image. The final spacecraft configuration at launch could easily be different, so stay tuned here for more news. The position of Jupiter in the sky relative to Europa and the spacecraft are also off in this drawing

This is an artist’s concept of a plume of water vapor thought to be ejected off the frigid, icy surface of the Jovian moon Europa, located about 500 million miles (800 million kilometers) from the sun. Spectroscopic measurements from NASA’s Hubble Space Telescope led scientists to calculate that the plume rises to an altitude of 125 miles (201 kilometers) and then it probably rains frost back onto the moon’s surface. Previous findings already pointed to a subsurface ocean under Europa’s icy crust.
Image credit: NASA/ESA/K. Retherford/SWRI

Two large solar arrays are shown extending from the sides of the Europa spacecraft to which the ice-penetrating radar antennas are attached in this artist’s rendition. On the side of the craft, a saucer-shaped high gain antenna is depicted next to a magnetometer boom. On the forward section is a remote-sensing palette with the remaining science instruments.

Jupiter’s moon Europa has a crust made up of blocks, which are thought to have broken apart and ‘rafted’ into new positions, as shown in the image on the left. These features are the best geologic evidence to date that Europa may have had a subsurface ocean at some time in its past.
Combined with the geologic data, the presence of a magnetic field leads scientists to believe an ocean is most likely present at Europa today. In this false color image, reddish-brown areas represent non-ice material resulting from geologic activity. White areas are rays of material ejected during the formation of the Pwyll impact crater. Icy plains are shown in blue tones to distinguish possibly coarse-grained ice (dark blue) from fine-grained ice (light blue). Long, dark lines are ridges and fractures in the crust, some of which are more than 1,850 miles long. These images were obtained by NASA’s Galileo spacecraft during Sept. 7, 1996, Dec. 1996 and Feb. 1997 at a distance of 417,489 miles.
Image Credit: NASA/JPL/University of Arizona

The Europa Mission profile has a very capable, radiation-resistant spacecraft traveling to Jupiter, where it enters into a long, looping orbit of the giant planet in order to perform at least 45 repeated flybys of Europa at altitudes ranging from 1700 miles to 16 miles (2700 kilometers to 25 kilometers) above its surface. Planetary scientists want to take a closer look at the evidence for an ocean of liquid water beneath its icy shell. An ocean of liquid water that could be the habitat of alien lifeforms we want to get to know better. 

Join the human journey to the beginning of space and time by joining the people helping NASA scientists look for possible planetary bodies between Neptune and Alpha Centauri.

Learn more about NASA plans to handle a possible future asteroid impact on Earth around Sept. 20, 2020, of a body estimated at around 300 to 800 ft in diameter.

Travel into the heart of a cosmic storm over 200,000 light-years away in one of many large satellite galaxies orbiting the Milky Way, the Large Magellanic Cloud.

Learn more about NASA’s Europa Mission here.

Explore NASA’s Jet Propulsion Laboratory.

Learn more about Jupiter and its moons here.

Explore Europa.

Learn more about the Large Magellanic Cloud.

NASA’s Juno Spacecraft Makes Jupiter Orbit After Five Years Traveling Across the Solar System

Juno team still celebrating confirmation of successful insertion into Jupiter orbit

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This computer-generated image depicts NASA’s Juno spacecraft firing its Leros-1b main engine. Credits: NASA/JPL

Space news (Space missions to Jupiter: NASA; Juno makes orbit around mighty Jupiter) – 370 million miles (596 million kilometers) from Earth, traveling at around 11 miles per second (17 kilometers per second) relative to the Sol, or 29 miles/second (46 kilometers/s) relative to Earth – 

This artist's rendering shows NASA's Juno spacecraft above the north pole of Jupiter. Credits: NASA/JPL
This artist’s rendering shows NASA’s Juno spacecraft above the north pole of Jupiter. Credits: NASA/JPL

It’s a bold, confident step forward into the solar system for NASA and the human journey to the beginning of space and time. After traveling nearly 1.36 billion miles (2.2 billion kilometers) during a journey lasting almost five years, NASA scientists and engineers prepared the Juno spacecraft for a planned 45-minute main engine burn to slow the spacecraft by around 1,200 mph (540 meters per second). At this lesser speed, the spacecraft falls quietly into mighty Jupiter’s gravity well, by entering Jupiter orbital insertion at a more controlled velocity. During this pre-insertion phase mission, specialists in NASA’s Jet Propulsion Laboratory in Pasadena, California altered Juno’s altitude to point its main engine in the right direction for the maneuver. They also increased the spacecraft’s rate of rotation from 2 to 5 revolutions per minute (RPM) to help stabilize it. 

Portrait, Charles F. Bolden, Jr., Administrator, National Aeronautics and Space Administration (NASA). Washington, DC, July 29, 2009. Photo Credit: (NASA/Bill Ingalls)
Portrait, Charles F. Bolden, Jr., Administrator, National Aeronautics, and Space Administration (NASA). Washington, DC, July 29, 2009. Photo Credit: (NASA/Bill Ingalls)

“Independence Day always is something to celebrate, but today we can add to America’s birthday another reason to cheer — Juno is at Jupiter,” said NASA administrator Charlie Bolden. “And what is more American than a NASA mission going boldly where no spacecraft has gone before? With Juno, we will investigate the unknowns of Jupiter’s massive radiation belts to delve deep into not only the planet’s interior but into how Jupiter was born and how our entire solar system evolved.” 

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This infographic illustrates the radiation environments Juno has traveled through on its journey near Earth and in interplanetary space. Credits: NASA/JPL

At 8:18 p.m. PDT (11:18 p.m. EDT) on Monday, June 4, 2016, NASA’s Juno spacecraft started its 645-Newton Leros-1b main engine to decrease velocity to allow for a safe Jupiter orbital insertion. 35 minutes later, at 8:53 p.m. PDT (11:53 p.m. EDT), NASA’s Juno team received data from the spacecraft confirming a successful insertion into orbit around mighty Jupiter. A little earlier than expected, but better early, than never at all.  

Description: Scott Bolton, Div. 15, Portrait, man, 1 image Date photographed: 12/7/04 Charge number: 68OH Publication: New Hire/Professional Announcement Contact name: Brenda Decker Photographed by: Larry Walther Department name: Division: (68)
Scott Bolton, principle investigator of Juno from Southwest Research Institute in San Antonio. Credits: NASA/JPL 

“This is the one time I don’t mind being stuck in a windowless room on the night of the 4th of July,” said Scott Bolton, principal investigator of Juno from Southwest Research Institute in San Antonio. “The mission team did great. The spacecraft did great. We are looking great. It’s a great day.” 

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This is the final view taken by the JunoCam instrument on NASA’s Juno spacecraft before Juno’s instruments were powered down in preparation for orbit insertion on July 4. Credits: NASA/JPL

After the successful Jupiter orbital insertion, the team turned Juno so its three huge solar arrays, shaped like a windmill, could capture the sun’s rays on 18,698 individual solar cells that give Juno its energy. At an average distance of around 484 million miles (778 million kilometers) from Sol, Jupiter is generally five times further from the sun than Earth, which means the amount of solar energy collected by Juno’s solar array’s about 25 times weaker. At this distance, despite recent advances in solar cell technology, Juno’s solar collectors only provide about 450 watts of power, enough to power four household light bulbs. 

“The spacecraft worked perfectly, which is always nice when you’re driving a vehicle with 1.7 billion miles on the odometer,” said Rick Nybakken, Juno project manager from JPL. “Jupiter orbit insertion was a big step and the most challenging remaining in our mission plan, but there are others that have to occur before we can give the science team members the mission they are looking for.” 

Next, the team will prepare Juno to conduct the science data collection phase of the mission. They need to do final testing of all spacecraft subsystems, calibrate science instruments, and collect some data to enable the next phase of Juno’s mission to Jupiter.  

This illustration depicts NASA's Juno spacecraft approaching Jupiter. Credits: NASA/JPL
This illustration depicts NASA’s Juno spacecraft approaching Jupiter. Credits: NASA/JPL

“Our official science collection phase begins in October, but we’ve figured out a way to collect data a lot earlier than that,” said Bolton. “Which when you’re talking about the single biggest planetary body in the solar system is a really good thing. There is a lot to see and do here.” 

The Juno mission’s primary science objective is to uncover clues to the origin and evolution of mighty Jupiter, the biggest planet in our solar system. Now, Juno will turn its suite of nine science instruments to the task of exploring the possible existence of a solid planetary core and mapping the gas giant’s extreme magnetic field. It will also measure the amount of water and ammonia in the deep atmosphere of Jupiter and observe its amazing, stunning auroras. If the mission goes as scripted, human knowledge and understanding of the birth and formation of giant planets will take a huge step forward, and the part Jupiter played in the origin and evolution of the solar system and life on Earth could be partly revealed. The knowledge we gain through our journey to Jupiter can even offer us useful, critical clues to the processes creating some of the bizarre creatures in the Planetary Zoo of Exoplanets.  

pia14447
This trio of Junocam views of Earth was taken during Juno’s close flyby on October 9, 2013. The leftmost view shows the southern two-thirds of South America. As the spacecraft moved eastward during its flyby, the Chilean coast and the snowy line of the Andes Mountains recedes toward the limb at left on the planet. The third image includes a view of the Argentinean coastline with reflections, or specular highlights, off the Rio Negro north of Golfo San Matias, as well as cloud formations over Antarctica. Credits: NASA/JPL-Caltech/MSSS

Watch JunoCam

Join the conversation and help determine future targets for JunoCam, a visible light camera on board Juno. Right now, people around the world are talking about and voting on the images the spacecraft will take of Jupiter during its mission. They’re uploading personal images and data NASA mission specialists can use to help plan the days ahead for the Juno mission. We suggest you read the submission guidelines before submitting images or data to the official Juno website.  

Here people can read the latest news concerning Juno, watch a series of videos with announcer Bill Nye (The Science Guy) explaining the dangers and interesting things you need to know about Jupiter and its moon system and meet the team behind our journey to the biggest planet in the solar system. You can follow the story of the Juno mission from start to finish and find out about future plans for our visit. 

Watch this movie of Juno’s approach to Jupiter and moons between June 12 – 29. It starts with the spacecraft about 10 million miles from Jupiter and ends 3 million miles away from the gas giant.  

For millennium Jupiter was but a wandering star until Galileo observed transiting bodies change position with respect to the suspect star over the course of a few nights. Through these observations, he realized these bodies were moons orbiting a distant planet. He came to the revelation the Earth isn’t the center of the universe and forever changed the way we view our place in the cosmos.  

Join the voyage of NASA and its scientists, engineers and brave astronauts here

Learn more about Jupiter and its moon system

Join Juno as it prepares to explore Jupiter here

Explore NASA’s Jet Propulsion Laboratory

Read and learn about magnetic lines of force emanating from supermassive black holes.

Travel across the Tarantula Nebula on a runaway star.

Read about the star navigating skills of Polynesian islanders who colonized the isolated islands of the Pacific Ocean.

Europa Spacecraft

Set to blast off sometime in the 2020s

Space news (The search for life beyond Earth) – An artist’s rendition of the Europa spacecraft orbiting Jupiter

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NASA’s Jet Propulsion Laboratory released this artists rendering of the Europa spacecraft, which is set to head to Jupiter sometime in the 2020s. The Europa Mission spacecraft configuration in early 2016 is shown in this image. The final spacecraft configuration at launch could easily be different, so stay tuned here for more news. The position of Jupiter in the sky relative to Europa and the spacecraft are also off in this drawing

Two large solar arrays are shown extending from the sides of the Europa spacecraft to which the ice-penetrating radar antennas are attached in this artist’s rendition. On the side of the craft, a saucer-shaped high gain antenna is depicted next to a magnetometer boom. On the forward section is a remote-sensing palette with the remaining science instruments.

The Europa Mission profile has a very capable, radiation-resistant spacecraft traveling to Jupiter, where it enters into a long, looping orbit of the giant planet in order to perform at least 45 repeated flybys of Europa at altitudes ranging from 1700 miles to 16 miles (2700 kilometers to 25 kilometers above its surface. Planetary scientists want to take a closer look at the evidence for an ocean of liquid water beneath its icy shell. An ocean of liquid water that could be the habitat of alien lifeforms we want to get to know better. 

Learn more about NASA’s Europa Mission here.

Explore NASA’s Jet Propulsion Laboratory.

Learn more about Jupiter and its moons here.

Explore Europa.

Read about the next generation Large Synoptic Survey Telescope.

Learn more about the recent observation of gravitational waves by LIGO.

Learn about Gosek Henge a 7,000-year-old solar observatory.

The Human Journey to the Beginning of Space and Time is All-Systems-Go for Jupiter’s Moon Europa

Planetary scientists and exobiologists are planning a trip to determine if an ocean of water exists beneath its icy surface

Four hundred years ago, the astronomer Galileo's discovery of Jupiter's four large moons forever changed humanity's view of the universe, helping to bring about the understanding that Earth was not the center of all motion. Today one of these Galilean moons could again revolutionize science and our sense of place, for hidden beneath Europa's icy surface is perhaps the most promising place to look for present-day environments that are suitable for life.
Four hundred years ago, the astronomer Galileo’s discovery of Jupiter’s four large moons forever changed humanity’s view of the universe, helping to bring about the understanding that Earth was not the center of all motion. Today one of these Galilean moons could again revolutionize science and our sense of place, for hidden beneath Europa’s icy surface is perhaps the most promising place to look for present-day environments that are suitable for life. (Image courtesy of NASA)

Space news (July 15, 2015) – the search for life beyond Earth – With abundant water, a rocky substrate, and available heat energy due to tidal forces, Europa would be one of the best places in the solar system to search for signs of life.  

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John Grunsfeld, associate administrator for NASA’s Science Mission Directorate in Washington. Credit: NASA

Today we’re taking an exciting step from concept to a mission, in our quest to find signs of life beyond Earth,” said John Grunsfeld, associate administrator for NASA’s Science Mission Directorate in Washington. “Observations of Europa have provided us with tantalizing clues over the last two decades, and the time has come to seek answers to one of humanity’s most profound questions.”  

Artist concept of NASA's Europa mission spacecraft approaching its target for one of many flybys. Image credit: NASA/JPL-Caltech
Artist concept of NASA’s Europa mission spacecraft approaching its target for one of many flybys. Image credit: NASA/JPL-Caltech

NASA’s Europa Multiple Flyby Mission will conduct a detailed survey of the moon and its suitability for sustaining life. Estimates by planetary scientists indicate there could be as much as twice the volume of water as on Earth underneath the icy crust of this distant moon.  

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NASA astrobiologist Dr. Richard Hoover discovered this ancient moss still capable of growing and reproducing after 40,000 years beneath the Russian permafrost. Credit: (NASA/MSFC)

Could extremophiles – extreme forms of life found on Earth – exist on Europa? Some exobiologists think it could be possible forms of life found surviving and evolving in extreme environments on our planet could be tough enough. The existence of single-celled life forms in such environments would truly be a monumental point in human history.  

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NASA astrobiologist Dr. Richard Hoover retrieved this extremophile bacterium from ice dating to over 32,000 years ago. Credit: (NASA/MSFC)

Energy for living things to survive, prosper and evolve could be extracted from the environment if heat energy produced by tidal flexing of the crust of Europa is sufficient to drive chemical reactions. Chemical reactions that could recycle elements, making them available for use by living things in the battle to survive and evolve.  

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One of the oldest lifeforms still existing on the Earth, a tardigrade or “water bear” is seen through an electron microscope. Less than 1 mm in length, these hardy creatures can withstand the rigors of space travel for extended periods. They’re currently being studied to see just how tough they’re. Credit: ESA/Dr. Ralph O. Schill

Could there be life existing in the oceans of Europa? The known requirements for the existence of life, extraterrestrial or Earth-based, are still pretty basic at this point and they’ll change as we discover and learn more about what life really needs to survive, prosper and evolve.  

Cutaway diagram of Europa's interior. Artwork credit: Michael Carroll
Cutaway diagram of Europa’s interior. Artwork credit: Michael Carroll

We have waited patiently since NASA’s Galileo spacecraft first showed us oceans of water could exist beneath the icy surface of Europa. Sometime in the 2020s mankind will launch the Europa Multiple Flyby Mission to this distant moon of Jupiter in a desire to take a look.  

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The Galileo spacecraft being deployed from the cargo bay of STS-34 Atlantis at 7:15 p.m. EDT on 18th October 1989. Credit: NASA/JPL

All systems go for Europa

The trip to Europa is expected to launch from Cape Canaveral and take about 6.5 years, with gravity-assist from flybys of Venus and Earth, before arriving in the Jupiter system sometime in 2026 or 2027.  

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The Europa Orbiter above the surface of Europa, with Jupiter in the background. Credit: NASA/JPL

The mission calls for a spacecraft to flyby Europa 45 times, conducting a detailed survey and analysis of the icy surface of the moon in high-resolution images. In order to give planetary scientists more information on its composition and the environment and structure of the moon’s interior regions.  

“It’s a great day for science,” said Joan Salute, Europa program executive at NASA Headquarters in Washington. “We are thrilled to pass the first major milestone in the lifecycle of a mission that will ultimately inform us on the habitability of Europa.”  

You can follow the development of NASA’s Europa Multiple Flyby Mission here.  

You can learn more about NASA’s space mission here.  

You can discover more about Jupiter’s moon Europa here.  

Learn more about the formation of young stars in galaxy clusters.

Read about NASA’s recent appeal for private business partnerships to help enable the human journey to the stars.

Learn about the kinds of planets space scientists are finding in four star systems.

Convergence of Venus and Jupiter

June 30 Venus and Jupiter will appear as one big double star in the western sky once the Sun goes down

On June 30 Venus and Jupiter will appear as one big double star in the night sky.
On June 30 Venus and Jupiter will appear as one big double star in the night sky.

Space news (June 26, 2015) –

Amateur and professional astronomers are watching as Venus and Jupiter draw steadily closer and will appear to converge on June 30. The two brightest planets in the night sky, Venus and Jupiter have been moving toward convergence since the beginning of the month, which is the closest they’ll appear until August 2016.

Jupiter and Venus having been steadily moving toward convergence since the beginning of the month.
Jupiter and Venus having been steadily moving toward convergence since the beginning of the month.

Wind the clock back a few thousand years, there would probably be a festival or human sacrifice, in some cultures, about to occur in a few days time. Looking up at Venus and Jupiter as they move closer each night would have been an awe-inspiring and frightening sight, and certainly one an ancient culture would have noticed and worshiped in some way.

Venus and Jupiter are in fact over 800 million miles apart, they only appear closer in the night sky, because of their current positions in their orbits. Venus is currently overtaking or lapping Jupiter as it orbits the Sun, and on June 30 across North America, they’ll appear as one big double star in the night sky.

Viewers can view the convergence with the naked eye although binoculars or a small telescope certainly enhances the show. The best part is the show is viewable anywhere on the planet, check with local astronomers for the best time to view the convergence. 

Just look to the West a few hours after sunset on June 30. People in Australia and the East wait until August 1 to see Venus and Jupiter converge, but this won’t diminish the show.

Your eyes will need a few minutes to adapt to light levels, but once the lights go down, you’ll be amazed by the brightness of the event. A stunning 0.33 of a degree apart at convergence, around 30 times closer than at the beginning of the month, Venus and Jupiter can be hidden behind your finger.

There’s nothing to be afraid of, these events don’t significantly increase gravitational forces, and aren’t harbingers of doom.

No need for the human sacrifice!

For more information on the convergence of Venus and Jupiter on June 30 check here

Learn how the stars seed the universe with the building blocks of the cosmos.

Learn more about red dwarf stars.

Learn how planetary space scientists map water vapor and temperature on hot Jupiter-class exoplanets.

Jupiter’s Opposition

Space & astronomy wiki – the planets in the solar system –

Jupiter's opposition
Jupiter’s opposition

Is when Earth passes more or less between the Sun and Jupiter, placing mighty Jupiter opposite the Sun in our sky

The opposition of Jupiter occurred on February 6 in 2015. On this date, Jupiter came to within 404 million miles of Earth (650 million km), the closest opposition until 2019.

The opposition of Jupiter occurs on March 8 in 2016. Jupiter comes into opposition every 13 months, which is the amount of time it takes Earth to travel once around the Sun relative to Earth.

Read about ancient dust falling onto Mars from Oort Cloud containing metal ions.

Learn how to calculate the orbit of asteroids within the Main Asteroid Belt.

Read about the Rosetta spacecraft preparing to make history by landing on Comet 67P/Churyumov-Gerasimenko.