There's more than one 'moon' orbiting Earth

Why NASA wants to 'touch the sun'

The dark side of the Perseid meteor shower

Perseid meteor shower: What you need to know

Now you can build your own mini Mars rover

Blue crystals spill the beans on sun's wild past

What to see in the night sky in August

This is every asteroid that has swooped by Earth since 1999

NASA study throws cold water on idea of terraforming Mars

Liquid lake discovered below Mars' polar cap

There might once have been life on ... the moon? Yes, say researchers

Dust storm continues to envelop Mars