Easy as ABC?Mathematicians are working hard to understand an impenetrable proof of the famous ABC conjecture.
What is a block universe?Has the future already already been written? Is time just an illusion? Take a step outside of spacetime with cosmologist Marina Cortês to discover the block universe.
Time in a block universeFundamental physics says time is symmetric - so why does time move forwards for us in a block universe?
Why not block time?Is time real? Are we just puppets living out a future already written? Marina Cortês explains why she thinks time is fundamental and that we don't live in a block universe.
The future is timeMarina Cortês is one of a growing number of physicists who believe time is fundamental. We ask her about the alternatives theories to the block universe, where time comes first.
Time to go retroA model of backward causation in which the future affects the past could help unite quantum mechanics and general relativity – and satisfy a challenge thrown down almost a century ago by Arthur Eddington.
The cosmic family treeMapping the ancestral history of spacetime in an effort to unite quantum mechanics and general relativity.