As it orbits the sun once every 25,000 years, the celestial body 2017 OF201 travels beyond the Kuiper Belt into a region ...

Replanting forests can help cool the planet even more than some scientists once believed, especially in the tropics. But even ...

A study suggests that Venus' volcanic "pancake domes" push the planet's crust down, forming bulges toward the surface. This ...

It's an evocative idea that has long bedeviled scientists: a huge and mysterious planet is lurking in the darkness at the ...

As hot, dry and disastrous as the last few years have been, it appears that the chaos caused by a warming planet is just ...

There’s a new object in the distant reaches of our solar system, and it might just offer clues to a long-standing cosmic ...

In April, astronomers said they had detected a possible signature of life on the exoplanet K2-18b. Now, three independent ...

A conversation with Peter Schlosser, vice president and vice provost of Global Futures at Arizona State University ...

U.S. astronomers hunting for "Planet Nine" have instead stumbled on what appears to be a new dwarf planet in the solar system ...

A team of astronomers believe they may have discovered a new dwarf planet—just like Pluto—on the edge of our solar system.

Wildlife rangers are being killed at a rate of nearly two a week, and it’s a toll Prince William has said the world can no ...