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Perhaps wormholes will no longer be relegated to the realm of science fiction.

Leading a scientific revolution is easy: you just have to succeed where the current theory fails while equaling its successes. Good luck!

What do ghosts and anomalous galaxy rotation rates have in common? Some sci-fi enthusiasts believe the answer involves "parallel universes."

The big-picture physics is simple – let gravity do its job.

Stars orbiting black holes were observed to move significantly slower than expected. One explanation centers on dark matter.

In 2017, a kilonova sent light and gravitational waves across the Universe. Here on Earth, there was a 1.7 second signal arrival delay. Why?

Einstein's "happiest thought" led to General Relativity's formulation. Would a different profound insight have led us forever astray?

If Einstein couldn’t solve the theory of everything, could anyone? Physicist Michio Kaku explains what it would take.

The key problem with the dark matter hypothesis is that nobody knows what form dark matter might take.

With a telescope at just the right distance from the Sun, we could use its gravity to enhance and magnify a potentially inhabited planet.

The paper does not prove the existence of dark matter, but it mostly eliminates a rival theory called Modified Newtonian Dynamics.

When black holes disappear, what happens to the stuff that fell in? Physicist Brian Cox explains.

The familiar terrain of solids, liquids, and gases gives way to the exotic realms of plasmas and degenerate matter.

An astrophysicist explains these shortcuts through space-time.

When Einstein gave General Relativity to the world, he included an extraneous cosmological constant. How did his 'biggest blunder' occur?

For decades, theorists have been cooking up "theories of everything" to explain our Universe. Are all of them completely off-track?

Though a single measurement is not enough to definitively decide the debate, this is a major win for dark matter proponents.

Is science close to explaining everything about our Universe? Physicist Sabine Hossenfelder reacts.

Sabine Hossenfelder talks about Albert Einstein, dead grandmothers, the physics of aging, and more in this full interview with Big Think.

All matter particles can act as waves, and massless light waves show particle-like behavior. Can gravitational waves also be particle-like?

The emergence of life in the universe is as certain as the emergence of matter, gravity, and the stars. Life is the universe developing a memory, and our chemical detection system could find it.

The idea of "absolute time" was our default for millennia. But time is relative, as gravity and motion both cause time to dilate.

The question of why the Universe is the way it is is an ancient one, and none of the answers we have come up with are satisfying.

Most asteroids aren't what you think they are.

The classic picture of Jupiter's great rocky core might be entirely wrong.

Einstein's relativity overthrew the notion of absolute space and time, replacing them with a spacetime fabric. But is spacetime truly real?

Can two planets stably share the same orbit? Conventional wisdom says no, but a look at Saturn's moons might tell a different story.

From the Big Bang to dark energy, knowledge of the cosmos has sped up in the past century — but big questions linger.

The great hope is that beyond the indirect, astrophysical evidence we have today, we'll someday detect it directly. But what if we can't?

At a fundamental level, nobody knows whether gravity is truly quantum in nature. A novel experiment strongly hints that it is.