For years, as we inch closer to sending people to Mars, scientists have worried about whether Earth microbes could survive on ...

Explore 25 of Earth's most incredible extremes, from Everest's peak to the Mariana Trench. Discover the planet's hottest, ...

Scientists say new technologies have reopened the debate over whether Mars could someday be terraformed, turning a once ...

Scientists say the findings of the new study may make future searches for extraterrestrial intelligence faster and more ...

In a major milestone in the search for life on other planets, astronomers have detected, for the first time, an atmosphere ...

Astronomers have only previously found atmospheres around exoplanets that are very large or incredibly hot – but now they ...

Astronomers found a helium atmosphere around a rocky exoplanet — a good sign for the search for life outside the solar system ...

A two-week expedition off the coast of Brazil has identified 31 previously unknown deep-sea species, many with forms so ...

Alas, it’s not a study-abroad course – yet – but exoplanets may provide insight into how life formed on Earth.

Eventually, we'll launch a mission dedicated solely to studying an interstellar object. When that day comes, which one should ...

When the U.S. was born, humanity was still seven years away from balloon-borne flight. Where might we be another 250 years ...

The Pentagon's latest declassified UAP files, including eyewitness videos and historical documents, have reignited interest in extraterrestrial theories and alien life.