ScienceCasts: Two Comets to Fly By Mercury on Nov 18 & 19
- Uploaded by Conspiritor on Nov 16, 2013
- Views: 82
Visit for breaking science it a cosmic coincidence: On Nov. 18-19, two comets (ISON and Encke) are going to fly by the planet Mercury in quick succession. NASA's MESSENGER spacecraft will have a front-row seat for the rare double flyby.