27 March 2023
Primordial black holes older than the big bang could rewrite cosmology by providing evidence for a previous universe. It's a wild idea, but some physicists think we've got a chance of finding them
13 March 2023
Most experts think we have to tweak general relativity to fit with quantum theory. Physicist Jonathan Oppenheim isn't so sure, which is why he’s made a 5000:1 bet that gravity isn’t a quantum force
10 January 2023
If we can’t measure something, we can’t know its true nature. This fundamental limitation hampers our understanding of the quantum world – but it doesn't preclude scientific thinking
10 October 2022
Physicist Carlo Rovelli explains the strange principles of relational quantum mechanics - which says objects don't exist in their own right - and how it could unlock major progress in fundamental physics
30 March 2022
To make sense of mysteries like quantum mechanics and the passage of time, theorists are trying to reformulate physics to include subjective experience as a physical constituent of the world
30 March 2022
To make sense of mysteries like quantum mechanics and the passage of time, theorists are trying to reformulate physics to include subjective experience as a physical constituent of the world
29 December 2021
Surprising new insights about the strange physics underlying how clocks work could transform our understanding of time's arrow – and hint at how time works at the quantum scale
17 November 2021
Physicists have long speculated why our universe seems “just right” for life. The most complex answer might be the simplest – that every other universe also exists
17 November 2021
We have made huge progress in understanding some bits of the cosmos, but we’ve hit a brick wall with things like quantum theory and our own minds. Is there a way round?
17 November 2021
We are tiny specks of life in a vast, indifferent cosmos – but to say that decreases the value of our existence is to measure ourselves against the wrong thing
