In Interstellar, Miller’s planet orbits close to the black hole Gargantua, where gravity is so strong that time runs much ...

Imagine gazing at a distant star, its light traveling millions or even billions of years to reach our telescopes. As we ...

A new paper presents a method for distinguishing between different sources of nanohertz gravitational waves. Pulsars may be revealing faint ripples in the fabric of the universe, ultra–low-frequency ...

Under normal circumstances, your light cone (and thus your world line) remains fixedly pointed toward the future. However, we ...

This Star Trek concept ignited a dream that humans could one day travel faster than the speed of light. Now physicists are ...

The gravitational lensing that causes this rare phenomenon cannot be explained solely by looking at observable ...

The world’s best clocks may be sensitive to an odd mix of quantum and relativistic effects that would stretch time and test ...

Wallowing in last place with an edge defence that flapped like laundry on the Hills Hoist, Penrith were so abysmal they even copped a touch-up from the Newcastle Knights, a team of such impotence that ...

Interference from human activity has always been a sticking point in astronomical observations. Radio astronomy is notoriously sensitive to unintentional interference—hence why there are "radio silent ...

ABSTRACT: Time dilation is a measurable change in the passage of time caused by differences in gravitational potential, a key prediction of general relativity. Recent advances in atomic clock ...

"It's a remarkable demonstration of what gravitational waves can do." Astronomers have for the first time measured the speed and direction of a newborn black hole, thanks to gravitational waves ...

Ten years ago, scientists heard the universe rumble for the first time. That first discovery of gravitational waves proved a key prediction from Albert Einstein's theory of general relativity and ...