Comet Siding Spring after its close approach to Mars (Rolando Ligustri)
Comet Siding Spring (just above center) and Mars (brilliant object to lower left) seen on October 20, 2014 at 09:47 UT, hours after the comet's closest approach. Image acquired from iTelescope Siding Spring, Australia. The bright star at upper right is 51 Ophiuchi.
Original image data dated on or about October 20, 2014