For a long time, scientists assumed that Earth's water was delivered by asteroids and comets billions of years ago. This ...

For most of us, Antarctica is a frozen white desert that is mysterious, remote and almost unfathomably cold. However, a ...

A switch from a humid to a dry climate has led the Eastern African Rift Zone to pull apart more freely, new research finds.

Scientists solve a climate mystery that drove Earth’s transition from a warm greenhouse planet to today’s ice-covered world.

The Earth channels cosmic power in the form of solar energy. The coming winter superstorm shows just what havoc that power ...

Skygazers who look up at the moon tonight may be able to spot Saturn below it. Here's when and how to spot the conjunction in Arizona.

Solar storms are eruptions that release some of the energy stored in the sun's strong magnetic field. These can create ...

Polygon has rounded up the best icy sci-fi planets from our favorite video games, movies, television, and books ...

The object dubbed Earth's "second moon" is actually a quasi-satellite that's accompanied the planet since 1957 — not a true ...

Nitrogen, upon which all life on Earth depends, may hold the key for explaining how early life on the planet evolved and how it could evolve on other planets.

"Most excitingly, this new idea addresses one of the longstanding habitability problems on Europa and is a good sign for the ...

Remembered as a pioneering atmospheric scientist who bridged planetary science, climate policy, and undergraduate education, ...