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
22 April 2023
An abridged inventory of everything there is in the universe – from rogue planets and exomoons to supernovae, supermassive black holes and the cosmic web.
31 March 2021
Hints of a hefty source of gravity beyond Pluto sparked the search for a possible “Planet Nine”. Now, some astronomers think it could instead be a black hole from the big bang, offering a rare glimpse into the early universe
29 July 2020
A faint fuzzy glow around the first black hole image last year baffled astronomers. Now we know what it contains – and it’s more bizarre than we ever imagined
28 May 2020
Black holes exert a powerful pull on our imagination, but their weirdness starts way before you cross the event horizon, says astrophysicist Chris Impey
9 October 2019
Exotic primordial black holes born in the moments after the universe began could be the key to solving some of cosmology’s biggest problems… if only we can find them.
16 April 2019
From wormhole passages to white hole escape routes, no one knows for certain what lurks beyond a black hole’s event horizon – so choose your own unsettling fate
