Alien planets are far away but extreme lasers on Earth are giving scientists a way to investigate what they're like.

Small, rocky planets can coalesce around a wide variety of stars, suggesting that Earth-like alien worlds may have formed early and often throughout our Milky Way galaxy's history, a new study reveals ...

Astronomers have discovered a unique planet in the Milky Way's Volans constellation, featuring a molten surface and sulfur-rich atmosphere. This hellish world, over 60% larger than Earth but less ...

Astronomers discovered a molten alien planet orbiting a star in the Milky Way. This planet, larger than Earth, is surrounded by a searing sulfur-rich atmosphere. It orbits a star in the constellation ...

New SETI research suggests space weather like solar winds could be interfering with alien radio signals, making them harder to detect.

Imagine if the nearest intelligent aliens were not across the street, not across the solar system, but on the far side of the Milky Way, some 33,000 light-years away from Earth. That’s the scenario ...

Despite the universe's vastness, containing billions of stars and galaxies, humanity has yet to encounter alien life.

If advanced aliens lived on a planet within a few hundred to a thousand light years away from Earth, then vast numbers of their signals must already have crossed Earth without being noticed, a new ...

August has been a month jam-packed with cosmic phenomena visible from Earth – from nebulas to meteor showers to planetary conjunctions. But the month isn't over yet. And now, add to the mix one of the ...

"Milky Way season," when our galaxy's bright center is most visible, is now beginning in the Northern Hemisphere. The best time to see the Milky Way in the U.S. is generally from March to September.