A peculiar Spanish fossil from 11.6 million years ago suggests that the ancestor of all apes might have been more like gibbons and less like great apes
Jupiter's icy moon is a favourite of alien-hunters, thanks to its buried ocean. Now it seems the ocean could come to the surface – and it might be life-friendly
Molecular oxygen has been spotted on a comet for the first time, which could help solve a mystery about when the substance first appeared in the solar system
If supernovae were triggered by companion stars, then why are most of them missing in action? A new theory suggests dark matter lights the fuse instead