Fast-moving star could help test relativity

A star has been discovered orbiting tightly round the massive black hole at the center of our Milky Way galaxy, making its circuit in just eleven and a half years.

Relativity tested by the cry of a shredded star

Astronomers recently discovered a quiescent black hole in a distant galaxy that apparently erupted after shredding and consuming a passing star.

Scientists show how to scrunch up space-time

Mathematicians say they've discovered a new way to crinkle up the fabric of space-time - at least in theory.

Redshift observations back up general theory of relativity

Sorry, says the barman, we don't serve neutrinos. A neutrino walks into a bar.

Want to stay younger? Just don't go upstairs

It's not news that it happens - but it's rather amazing to be able to measure it. The National Institute of Standards and Technology has been able to demonstrate that time passes faster just a foot above the ground.