Expert Voices Paul Sutter

Obviously, some chain of unfortunate events led to the ejection of 'Oumuamua from its home system. But what could possibly cause such a catastrophe?

Interstellar flight is a real pain in the neck.

There are some odd little particles out there that are bound by the strong nuclear force, but physicists can barely get a glimpse of them before they flit out of existence.

The two giant blobs remain mysterious, nearly a decade after their discovery.

A giant linear collider the size of Manhattan could finally help us find new physics, scientists argue.

Saturn's largest moon, Titan, is one of the most enigmatic bodies in the solar system.

These stars, though extremely common, are tough to study.

Our lives here on Earth are small and insignificant and inconsequential — but only in a certain frame of reference, and that frame of reference doesn't necessarily apply to cosmic scales.

The ever-brightening sun will evaporate our oceans, too.

Moons of "hot Jupiter" alien worlds may detach from their parent planets and begin orbiting stars on their own.

The discovery may reveal a crucial link between the evolution of black holes and galaxies.

Astrophysicist Paul Sutter breaks down the science behind NASA's historic Apollo moon missions for Space.com. Tune in here!

If this fundamental symmetry of the universe doesn’t hold, it could break open new physics.

The universe really likes its information — but black holes pose a huge paradox physicists can't yet solve.

At the very largest scales — zooming out from solar systems, stellar clusters and even galaxies — a surprising pattern emerges in nature.

It's a perennial sci-fi favorite: other worlds, other universes, other possibilities, right beyond the bounds of the known cosmos or just a flick of a magic device away.

Let's say you've got some random object in front of you — how about a nice hot cup of coffee?

All four known forces of nature have their own unique place — and the strong nuclear force governs the very small.

So there's this stuff called "antimatter." But a weirdly small amount of it.