Most comets aren’t blue but Comet c/2016 R2 is Blue AF & its out by Mars headed inbound and around the Sun. It appears
As NASA’s UARS satellite nears reentry, go to NASA (hyperlink to http://www.nasa.gov/mission_pages/uars/index.html) to get the most current updates. Aerospace engineers from Analytical Graphics, Inc.
This video is capture from Discovery Channel HD, the video is not in HD, that’s why i didn’t put HD in the title, Don’t