Oftentimes, we think of space as an endless, mostly empty vacuum, a silent backdrop where planets, stars, and galaxies play out their dance. We also think of time as something separate, a steady ...

Planets that orbit white dwarf stars should be too hot to host alien life, theories suggest. But a new study accounting for ...

But what if Einstein’s theory of relativity offers a different perspective? What if our inner world, like space-time, is ...

What if the universe remembers? A bold new framework proposes that spacetime acts as a quantum memory. For over a hundred ...

Albert Einstein was well known in Princeton for his generosity. But Jack Rosenberg remembers the time Einstein's colleagues asked him to turn the tables and help give the famous scientist a gift. "The ...

The instruments detected gravitational waves, faint ripples in space-time produced by the two black holes slamming ... devised by New Zealand mathematician Roy Kerr in 1963, builds upon Einstein’s ...

For the first time, physicists have simulated what objects moving near the speed of light would look like — an optical illusion called the Terrell-Penrose effect.

Here’s what you’ll learn when you read this story: Einstein’s Theory of General Relativity, an immensely important update to Newton's Law of Universal Gravitation, is currently our best approximation ...

Global Positioning System (GPS) satellites continuously beam down ultra-precise timestamps, each message essentially saying, “It was 12:00:00.000001 when I sent this.” ...

A research team proposes utilizing numerical relativity, a computational technique for solving Einstein's equations in high-gravity environments, to investigate the universe's origin. The approach ...

Fragments of energy may be the fundamental building blocks of the universe. The theory combines the ideas of particles and waves into a concentration of energy that flows throughout space and time.

Two black holes collided 1.3 billion light years from Earth, creating a 'ringing,' which in turn allowed astrophysicists to test some theories. And it turns out, they were all correct.