The universe is a very sticky place, but how sticky is it? Could it favour the “Big Rip” demise of the universe?
ESA's space probe Philae has awoken on comet 67P/Churyumov–Gerasimenko after seven months in hibernation.
The next five years will see a resurgence in lunar exploration, driven both by idealism and an economic incentive.
Travelling at close to the speed of light may be necessary for humans to colonise the galaxy, but the maths show it'd be like flying through a cloud of bombs - but also that we should notice the explosions here on Earth, if any other civilisation has managed the feat.
So much for being special.
The social network's giving its "elite" users more control over whose tweets they have to pay attention to.
Mars' moons are unusual in the Solar System - for their size, shape and colour from their parent planet. Where did they come from? We've got some clues to work with.
Don't trust everything you read.
Secret oceans on the moons Enceladus and Ganymede were discovered within days of each other, reshaping our belief that the Earth is the Solar System's most watery, life-friendly habitat.
With only days to go before the first probe goes into orbit around this surprisingly interesting dwarf planet, further mysteries – including two strange bright spots in a crater – are coming into focus.