ISON and New Quake Update. ( 6:21 ) Multiple Nuclei in the Coma. At 4 minutes 43 seconds into this video, the author talks about an old comet strike on earth. This whole video is well worth your time and talks about Comet Ison as of about 1:00 pm Sunday Afternoon, Nov 17, 2013. RELATED LINK Giant Crater Found: Tied to Worst Mass Extinction Ever, by Robert Roy Britt, Senior Science Writer (Space.com), June 01, 2006