NASA’s Near-Earth Object Wide-field Survey Explorer (NEOWISE) discovered eight potentially dangerous asteroids during a recent one-year mission. Dangerous asteroids, in this case, are classified as objects that due to their volume and near-Earth orbit could pose a future collision threat. This was out of a total of 40 new objects NASA discovered orbiting close to the planet during its year-long mission. You can view a movie of the spacecraft’s progress during the past year using the link at the end of the article.
NEOWISE looked at a total of 245 known near-Earth objects from December 2013 to December 2014. This spacecraft views the sky during the dawn and dust perpendicular to a line between Earth and the sun. This allows it to spot near-Earth objects that come close to the planet. In this case discovering eight potentially dangerous asteroids, we can make plans to deal with, if needed, in the future. They also got a better look at the size and orbit of over 200 near-Earth objects they knew about.
NEOWISE found a total of 35 comets during its year-long mission, including three space scientists knew nothing about. This includes the brightest comet in Earth’s sky, comet C/2014 Q2 (Lovejoy), which arrived early in 2015.
No word from NASA on the future of NEOWISE, but we do need a spacecraft monitoring the skies near Earth for potentially hazardous objects on a full-time basis. Hopefully, they can rework this spacecraft’s mission, once again, and put NEOWISE on guard protecting the planet for decades to come.
You can find more information on NASA’s NEOWISE here.
You can find a chart of comet Lovejoy’s progress during the month here.
You can find more information on NASA’s mission to catalog all near-Earth objects here.