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Hubble's view of Mars during the Comet Siding Spring flyby
Hubble's view of Mars during the Comet Siding Spring flyby Ted Stryk created created this image of Mars during the flyby of Comet C/2013 A1 Siding Spring on October 19, 2014 using frames from the Hubble Space Telescope Wide Field Camera 3 (WFC3) and Advanced Camera for Surveys Solar Blind Channel (ACS/SBC) combined with a color overlay. NASA / STSci / Ted Stryk