In this video, we explore Albert Einstein's theory of general relativity, focusing on his insights into gravity and ...

If there's one thing everybody knows about space, it's that there's no gravity once you leave the Earth's atmosphere. We all know that don't we? It's actually not true — and an attempt at a massive ...

A pair of spacecraft that meticulously mapped the moon's gravitational field has helped astronomers solve the long-standing mystery of why the moon is so gravitationally lumpy. A team of scientists ...

It’s time we talked about loop quantum gravity. What exactly is it? What are the loops? And can it really defeat string theory in our quest for a Theory of Everything? PBS Space Time is available to ...

Pesquet's fellow astronauts on the ISS were doing all sorts of somersaults inside the space station in zero gravity. One astronaut even managed to complete his "lack of floor" routine without touching ...

Physicists have long assumed that the universe is pretty much the same in any direction, and now they've found a new way to test that hypothesis: by examining the shadow of a black hole. If that ...

A new theory of quantum gravity, which attempts to unite quantum physics with Einstein's relativity, could help solve the puzzle of the universe's expansion, a theoretical paper suggests. When you ...