30 May 2023
Three decades ago, we spotted the single most energetic particle ever seen, nicknamed the 'Oh-My-God particle'. Since then, we have seen many more ultra-high-energy cosmic rays – and now we are unravelling the mystery of what produces them
24 May 2023
If there are intelligent aliens out there, should we try to get in touch with them? And who should speak for Earth, asks professor of astronomy Chris Impey
24 May 2023
Despite the obvious caveats, physicists are right to use fluids and other physical analogues to search for fresh insights about extreme cosmic phenomena, from black holes to the big bang
24 May 2023
As a theoretical cosmologist, you would think I'd welcome the chance to answer these questions - but it isn't clear this is an inquiry that physics can answer, says Chanda Prescod-Weinstein
5 May 2023
When looking up at the night sky, light from stars draws attention. But the darkness between the light can reveal even more about the universe, says Nobel prize-winning astrophysicist Adam Riess
2 May 2023
Radio signals sent to NASA spacecraft could have already reached four neighbouring star systems, and if any aliens tried to respond, we might hear from them within a few years from now
24 April 2023
If we could detect them, cosmic neutrinos would paint a picture of the universe in the instant after it began. Physicist Martin Bauer has come up with a plan to do just that
10 March 2023
For decades researchers have studied how heavy elements are produced in the cosmos – but there is still so much mystery to unravel, says astrophysicist Artemis Spyrou
6 March 2023
Classical relativity suggests that nothing could pass through a wormhole and exit, but quantum effects change that, says space reporter Leah Crane
1 March 2023
Light pollution is an issue for astronomers, but you can limit your contribution – and find a dark spot near you, says Abigail Beall
