Mars: Satellite spots 'spiders' on surface of Red Planet

Don't worry if you're scared of spiders - these images aren't actually of the eight-legged creepy-crawlies.

A European Space Agency mission has captured some incredible images of what looks like 'spiders' on Mars, but all is not what it seems.

The pictures from the Mars Express orbiter show dark spots on the planet's surface.

However, these form when frozen carbon dioxide is hit by spring sunshine.