LIGO’s executive director explains what it’s like to find a gravitational wave

I scored an exclusive…

What is the most astounding fact about the Universe?

That our atoms come from stars? You’ve got to…

Galileo didn’t invent astronomy, but he DID invent mechanical physics

By devising the first truly…

Why are Earth-orbiting satellites fundamentally unstable?

Without a boost, they’ll all come crashing…

What do star trails look like from the ISS?

A view that no one ever had — not even from space — until Astronaut Don Pettit…

Does the climax of the movie ‘Gravity’ violate simple physics?

Should George Clooney’s character have…

How fast does the Earth move through the Universe?

And if relativity tells us there’s no such thing as…

A nearby, infant star teaches us how planets began to form

A stunning new image of ALMA’s…

The Milky Way’s Most Recent Supernova Was Hidden… Until Now!

1604 is the last time a human saw one…

What your birthstone means, according to science

Geology rocks!

“Nobility, without virtue, is a…