What is space-time? Depending on how fast you're moving or how close you are do Earth's gravity can change the way time feels ...

Some physicists think our reality is a kind of cosmic hologram, with space, time, and gravity as manifestations of a ...

As Earthlings, most of us don’t spend a lot of extra time thinking about the gravity on our home planet. Instead, we go about ...

Black hole and Big Bang singularities break our best theory of gravity. A trilogy of theorems hints that physicists must go ...

Everything in the universe has gravity – and feels it too. Yet this most common of all fundamental forces is also the one that presents the biggest challenges to physicists. Albert Einstein’s ...

Gravity Could Be the Mother of Time, Scientists Say. That Could Upend Our Perception of the Universe. We experience the flow of time because it’s a natural outcome of the basic laws of physics.