Friday, November 22, 2013

ISON, Encke, Mercury, and Home

ISON, Encke, Mercury, and Home

On November 21, 2013, comet C/2012 S1 (ISON) entered the field of view of NASA's STEREO "Ahead" spacecraft's HI-1A camera. It joined Earth, Mercury and comet 2P/Encke!