Curiosity Right Mastcam (M-100)

Sol 662 18:02 Site 36/0000 0662MR0028150000402026E02_DXXX
Image Regulus for night time opacity [observations]
Jun 17, 2014 at 1:09:22 PM UTC (approximate)
Credit: NASA / JPL-Caltech / Malin Space Science Systems

Image Source