Watch this incredible footage of mammatus clouds forming over the sunset. Liz Legge from Indianapolis, USA, captured the rare event as the clouds passed through her neighbourhood. Despite over four ...

NASA's Mars Exploration Rover Spirit captured this stunning view as the sun sank below the rim of Gusev crater on Mars.

DON'T MISS: Weirdest cloud in Canadian history ... which is precisely why the sky is blue. At sunset, however, sunlight travels a much longer distance through the atmosphere.

After storms rolled through late Thursday afternoon, residents across Northeast Wisconsin saw some interesting cloud patterns ...