Asteroids & Comets, SpaceCasts Video: Siding Spring and other comet-planet encounters October 29, 2014 TopSpacer A SETI Institute discussion of the Comet Siding Springs fly-by of Mars and other comet encounters: Share this: Share on Facebook (Opens in new window) Facebook Share on X (Opens in new window) X Share on LinkedIn (Opens in new window) LinkedIn Share on Tumblr (Opens in new window) Tumblr More Share on Pinterest (Opens in new window) Pinterest Print (Opens in new window) Print Share on Reddit (Opens in new window) Reddit Related