Video: NASA Mission Tracks Asteroids in NEO

NEOWISE observations indicate that there are at least 40 percent fewer near-Earth asteroids in total that are larger than 330 feet, or 100 meters (Credits: NASA/JPL-Caltech).

Source NASA: NASA’s WISE mission has tracked down 93 percent of the 1 kilometer diameter or larger asteroids whose size could devastate our planet. The project’s asteroid census has revised the total number of NEO’s down from 36,000 to 20,500 (Credit: NASA/JPL).