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

While there’s no single accepted definition of life, scientists agree on some of the key clues. Gases like oxygen, carbon dioxide and methane in a planet’s atmosphere can serve as possible indicators ...

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 ...

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

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 ...

The comet formed in a cold and distant part of the early Milky Way up to 12 billion years ago, potentially putting it just under 2 billion years the age of the universe. The Gaia telescope spotted ...

Explore the Drake Equation, a formula created to quantify the odds of detecting extraterrestrial life, and the arguments for ...

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

THE Milky Way has had a sheltered life. A search for the signs of a violent galactic upbringing has come up empty, and the finding is helping astronomers understand our galaxy’s history. It could also ...

It may be our galactic neighborhood, but it is not always easy to see. However, that is about to change. For the next several months, the iconic band of hazy light, known as the Milky Way, should ...