You won’t notice the sunrise arrive 1.33 milliseconds sooner, but to precision atomic clocks, it will be obvious ...

It sounds like science fiction: a spacecraft, no heavier than a paperclip, propelled by a laser beam and hurtling through ...

About 5 billion light-years away from where you're sitting, in one of the most massive galaxies on record, there exists an astonishing black hole. It was only just measured by scientists who managed ...

A deceptive difference having to do with Earth's and Mars's gravity may be the reason why NASA's rovers get stuck in the ...

Astronomers propose a giant, hidden planet beyond Neptune to explain odd orbits of distant Kuiper Belt objects.

“A human can do this only if the respective black hole is supermassive and isolated, and if the person entering the black ...

The weak gravitational pull on a particle just half the mass of a grain of sand has been measured for the first time. This most precise measurement of its kind is a breakthrough towards the ...