Radar Pegs 3rd Closest Comet At 3000ft-Wide | Video

NASA’s Deep Space Network’s Goldstone Solar System Radar in California watched comet P/2016 BA14 for 3 days (March 21—23, 2016), The comet was between 2.5 million miles and 2.2 million miles (4.1 million kilometers and 3.6 million kilometers) away. The imagery reveals that the comet spins once every 35-40 hours. -- More images and observatory video: Credit: NASA/JPL-Caltech/mash mix: