Comet C/2013 A1 (Siding Spring) approaching Mars on Flickr.
comet sidingspring c2013a1 mars
The Moon and Saturn on Flickr.
Occultation of Omega Leonis on Flickr.
C/2013 R1 (Lovejoy) - Stack on comet on Flickr.
astronomy comet lovejoy
Moon and Jupiter on Flickr.
astronomy moon jupiter conjunction
Moon and Jupiter rising over Earth trees (Morning of July 15, 2012).
astronomy moon jupiter
Video of the Moon and Jupiter rising.
astronomy moon jupiter video
Jupiter and its satellites rising alongside the Moon.
Leap second at 23:59:60 UTC.
leap second video
70-meter dish antenna at Madrid Deep Space Communications Complex talking to the MESSENGER orbiter around Mercury.
astronomy astronautics nasa planetary exploration mdscc jpl