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The Universe, although violent, is filled with creation events following destructive ones. 1850 light-years away, both types are unfolding.

We have long thought that Pluto was completely frozen solid, but the discovery of cryovolcanoes challenges that assumption.

Out beyond Neptune are some fascinating bodies left over from our Solar System’s formation. Could one of them truly be spectacular?

Mercury, Venus, and Mars are all uni-plate planets, and may always have been. Here’s what’s known about why Earth, uniquely, has plate tectonics.

The structure of our Solar System has been known for centuries. When we finally started finding exoplanets, they surprised everyone.

Pluto failed to meet the definition of a planet, but some astronomers think there might be a legitimate Planet 9 out there.

The recent discovery of a large cave on the Moon highlights the importance of caves not just for future space explorers but astrobiology as well.

The number of planets that could support life may be far greater than previously thought, a recent discovery suggests.

In a distant galaxy, a cosmic dance between two supermassive black holes emits periodic flashes of light.

Do you think you know the Solar System? Here’s a fact about each planet that might surprise you when you see it!

The near and far sides of the Moon are so different from each other, and no one is sure why. New lunar samples could confirm a wild theory.

In all of human history, only 5 spacecraft have had the right trajectory to exit the Solar System. Will they ever catch Voyager 1?

Northern lights in the American South, clusters of huge geomagnetic storms—the Sun is throwing a tantrum right on schedule.

An army of replicators belonging to national laboratories, research universities, and amateur garages is rushing to replicate ambient superconductivity in LK-99.

Valles Marineris is the Solar System’s grandest canyon, many times longer, wider, and deeper than the Grand Canyon. What scarred Mars so?

In 2006, Pluto was demoted in a very controversial decision. Unless you ignore nearly all of planetary science, it’ll never be one again.

The truth is out there.

The nearby, bright star Fomalhaut had the first optically imaged planetary candidate. Using JWST’s eyes, astronomers found so much more.

Compared to Earth, Mars is small, cold, dry, and lifeless. But 3.4 billion years ago, a killer asteroid caused a Martian megatsunami.

All across the Universe, planets come in a wide variety of sizes, masses, compositions, and temperatures. And most have rain and snow.

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

Get ready for the most peculiar road trip that will help you understand the vastness and emptiness of the solar system — and Sweden.

The length of a day oscillates slightly every six years. This was a surprising discovery made last decade. We might now know why.

Our Universe requires dark matter in order to make sense of things, astrophysically. Could massive photons do the trick?

What if intelligence can thrive without consciousness?

From here on Earth, looking farther away in space means looking farther back in time. So what are distant Earth-watchers seeing right now?

Coherentism accepts that circular reasoning is probably the best any of us can do.

Straddling the bounds of science and religion, Newton wondered who set the planets in motion. Astrophysics reveals the answer.

Newborn stars are surrounded only by a featureless disk. Debris disks persist for hundreds of millions of years. So when do planets form?

Out of the four rocky planets in our Solar System, only Earth presently has plate tectonics. But billions of years ago, Venus had them, too.