25 November 2020
Different measurements of the Hubble constant, the rate of space-time expansion, refuse to agree – meaning we may have to look beyond Einstein’s theories to explain the universe
17 February 2020
For the first time, astronomers have spotted an exoplanet by detecting radio waves generated by interactions with its parent star
18 December 2019
There are around a hundred billion stars in the Milky Way, and most are rather humdrum – but the oddballs are so strange that they challenge our understanding of physics
19 November 2019
A 2016 experiment pointed towards the existence of an undiscovered force of nature. Now researchers say they've seen a second sign
22 August 2019
Supernovae and the big bang's afterglow give us conflicting numbers on how fast the universe is expanding. Gravitational waves could help settle things
8 July 2019
Moon rocks collected by the Apollo missions contain a pristine record of Earth's history. Reading it can teach us where best to look for habitable exoplanets
19 September 2018
Puffball planets the density of polystyrene are just some of the oddities we’ve spied in other solar systems – is our own backyard the exception, not the rule?
19 September 2018
It’s invisible, and yet the motions of galaxies suggest it must be there. But a recent discovery has just deepened the mystery of the universe we cannot see
20 June 2018
Decades of infighting and political interference have got NASA no closer to landing astronauts on the moon or Mars. Can its new leader spark a relaunch?
11 September 2017
Without Cassini and its forebears we would never have guessed life may lurk in the cold outer reaches of the solar system – now we know just where to look
