This month will usher in two separate conjunctions — one between the moon and a rarely-visible Mercury, and another between ...

Open the Youtube video Martian sunsets are distinct from those on Earth for several reasons. On Mars, twilight lasts far longer than on Earth, sometimes for up to two hours before sunrise or after ...

NASA's Mars Exploration Rover Spirit captured this stunning view ... the redness of the sky farther from the sunset is exaggerated compared to the daytime colors of the Martian sky. /Public Release.

Spirit was commanded to stay awake briefly after sending that sol's data to the Mars Odyssey orbiter just before sunset. This small panorama of the western sky was obtained using Pancam's 750 ...