Comet ISON: 5 Things You Should Know

Comet ISON is rapidly approaching its potential death-dive toward the sun -- here are the top 5 facts about this enigmatic celestial object that you should know.

October 3, 2013
12:45 PM EDT
Observations of Comet ISON as imaged by the HiRISE camera aboard NASA's Mars Reconnaissance Orbiter. | NASA/JPL-Caltech/Univ. of Ariz.
Comet Lovejoy (C/2011 W3) was a sungrazing comet that dove deep into the solar corona... and survived the searing heat. | NASA/ESA/LASCO Team
Infrared observations by NASA's Spitzer Space Telescope captured the glow of Comet ISON's nucleus and coma in June 2013. | NASA
Hubble observations of Comet ISON's coma and developing tail. | NASA/ESA
The location of Comet ISON in the night sky through to the end of October 2013. | NASA