From early experiments with lanterns to Einstein’s revelations about space and time, the speed of light has proven to be far ...

When LIGO detected gravitational waves unleashed from two colliding black holes for the first time in science history, it set off a whole new era in astronomy.

A backward, mirror universe could explain the existence of dark matter. If an anti-universe exists, it would run backward in time, before the Big Bang. Dark matter, then, could be right-handed ...

The universe exists because matter and antimatter are not good friends. Is there a scientific reason why the universe exists?

The description of creation encourages both intellectual and spiritual connection with the divine essence. In contemplating ...

“There’s a lot of meanings for ‘small,’” says Janet Conrad, a particle physicist at the Massachusetts Institute of Technology ...

That cosmologists cannot agree on one of the most elementary facts about the universe is striking enough. But that uncertainty produces others, too: it makes it impossible to calculate an exact age ...

Ten years ago, scientists heard the universe rumble for the first time. That first discovery of gravitational waves proved a ...

Quirks & Quarks is having its 50th anniversary this fall. Bob McDonald shares his appreciation for the people behind the ...

What was the universe like in the first few hundreds of millions of years after it came into existence? How did the first ...

Do we know what space actually smells like? And what about other planets, moons, and celestial bodies? Here's what the ...

In 1925, Edwin Hubble's observation of Cepheid variables in the Andromeda galaxy revolutionized astronomy, proving the ...