This video breaks down the most famous ways time travel could work, from relativistic speed to black holes, wormholes, ...

What happens when two black holes become connected through an inextricable quantum link? Calculations suggest that this can give rise to a bumpy space-time tunnel called the “Einstein-Rosen ...

This video turns spacetime into a cosmic threat, asking whether the fabric of reality can actually break. It explains ...

In May 2019, astronomers picked up something strange in the fabric of spacetime. The LIGO and Virgo detectors recorded a gravitational wave that lasted just one-tenth of a second. The signal, known as ...

Here's what you'll learn when you read this story: A wormhole in nature (for select values of "nature," of course) might be a similarly higher-dimensional shape that does not act the same when ...

Modified gravity theories extend Einstein’s general relativity by introducing additional degrees of freedom or higher-order curvature terms, with the dual aim of accounting for dark energy, dark ...

Some things in cosmology may simply be unknowable. Why is there something rather than nothing? What lies outside the universe? What is inside a black hole? That last one has been niggling at ...

The Nature Index 2025 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...