It's like Galileo dropping things off the Leaning Tower of Pisa, except in distant space.

Collapsed star proves another of Einstein's theories

Starfall

A bizarre star system: a collapsed pulsar and white dwarf binary orbiting a second white dwarf, upheld a major tenet of Einstein's general relativity.

Collapsed Star Proves Another of Einstein’s Theories

It's a celestial retelling of Galileo's famous freefall experiment.

Artist’s animation of S2’s precession effect

"This famous effect -- first seen in the orbit of the planet Mercury around the Sun -- was the first evidence in favor of general relativity."

A star is circling a black hole and its orbit is absolutely nuts

Sky Art

After nearly 30 years of research, astronomers found that a star orbiting a black hole does so in a rosette shape, supporting Einstein's general relativity.

A Star Is Circling a Black Hole and Its Orbit Is Absolutely Nuts

The rosette-shaped orbit perfectly matches Einstein's predictions.

"It would be amazing if it was shown to be right."

New theory could solve universe’s biggest paradox

Massive Gravity

Massive gravity theory modifies Einstein’s theory of general relativity to explain the universe's accelerating rate of expansion.

New Theory Could Solve Universe’s Biggest Paradox

It could modify Einstein's theory of general relativity — and kill the need for dark energy altogether.

Solving the enduring mystery of the speed of gravity will have broad implications for fundamental physics and our understanding of the cosmos.

We may finally understand the speed of gravity

Hard Science

We May Finally Understand the Speed of Gravity

We had no way to directly measure the speed of gravity. Now, that's changed.

Some of Star Trek’s most “far out” technologies could one day be a reality.

General Relativity says spacetime can warp.

Sci-Fi Visions

Is Warp Drive Physically Possible?

“With the CHIME telescope, we will measure the expansion history of the universe.”

The CHIME telescope will give us a whole new view of the structure of the universe

Off World

The telescope is expected to provide answers about our universe, distant stars, and gravitational waves.

The CHIME Telescope Will Give Us a Whole New View of the Structure of the Universe

CHIME could also help us confirm the final aspect of Albert Einstein’s theory of general relativity.

Time travel isn't possible...or is it?

Time travel of a sort is possible, but not in the sci-fi/fantasy way you're probably thinking of. The theory of relativity comes into play here.

Time Travel Isn’t Possible…or Is It?

The speed at which you move through space determines the speed at which you move through time.

The future of General Relativity is bright.

Albert Einstein's theory of General Relativity has led to our discovery of black holes, gravitational lensing, and gravitational waves. However, for about 30 years, scientists wrote the theory off as a small correction to Newtonian gravity.

Einstein’s Theory of General Relativity was Largely Ignored for Three Decades

Scientists at the time thought the theory was too complex compared to Newton's.

For decades now, scientists have been investigating the possibility that our Universe is, or once was, a giant hologram. It sounds far-fetched, but if true, it would actually solve some pretty hefty questions in physics

Here’s What Scientists Mean When They Say the Universe Could Be a Giant Hologram

It sounds far-fetched, but if true, it would actually solve some pretty hefty questions in physics.

Predicted by Einstein as part of his theory of general relativity, this could help measure the mass of distant stars using gravitational deflection.

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