Download: Comet Siding Spring Observed Hitting Mars.

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See Comet Siding Spring in real time hitting Mars.
C/2013 A1 (Siding Spring) is an Oort cloud comet discovered on 3 January 2013 by Robert H. McNaught at Siding Spring Observatory using the 0.5-meter (20 in) Uppsala Southern Schmidt Telescope. At the time of discovery it was 7.2 AU from the Sun and located in the constellation Lepus. Comet C/2013 A1 probably took millions of years to come from the Oort cloud. After leaving the planetary region of the Solar System, the post-perihelion orbital period (epoch 2050) is estimated to be roughly 1 million years. C/2013 A1 will pass the planet Mars very closely on 19 October 2014. After its discovery, there was initially even the chance of a collision with Mars, but this possibility was excluded when the orbit was subsequently determined better.
Go to for real time graphics. Courtesy of Solar system scope.