A NASA images shows what sunset on Mars looks like.
An old image of a Martian sunset has been making the rounds recently.
Captured on May 19, 2005, by NASA's Mars Exploration Rover Spirit, the striking panoramic view shows the sun as it dips underneath the Gusev Crater.
The image is actually a mosaic of photographs taken sometime shortly after 6:00 p.m. during Spirit's 489th day spent roving the Martian surface.
Aside from the obvious location difference, the Martian sunset distinguishes itself from our own.
On Earth, the sun appears more red due to the scattering of blue light as it passes through our atmosphere.
Or, for a more technical explanation, NASA