This animation shows asteroids and comets observed in infrared by NASA's Near-Earth Object Wide-field Survey Explorer (NEOWISE) mission.
Transcript:NASA's asteroid-hunting NEOWISE survey uses infrared to detect and characterize asteroids and comets. Since the mission was restarted in December 2013, NEOWISE has discovered 114 near-Earth objects and characterized 693 others.
The orbits of Mercury, Venus and Mars are shown in blue. Earth's orbit is in teal. Green circles represent near-Earth objects. Gray dots represent all other asteroids... which are mostly in the main asteroid belt between Mars and Jupiter. Yellow squares represent comets.
The survey depicted in the animation covers the period from January 25, 2014, to February 11, 2017.