Are we alone in the Universe? With more than 100 billion galaxies in the observable universe and at least 500 billion planets ...

Hollywood makes initiating alien contact seem much easier than it has proven to be. In E.T. the Extraterrestrial, E.T. got ...

Astronomers have revised the mass of nearby exoplanet GJ 3378 b, recasting it as a rocky super‑Earth in the habitable zone ...

Thousands of people have reported UFOs or alien encounters in Northern California. That number could soon go up.

A planet with one side permanently roasting and the other frozen in endless darkness might still have a chance of supporting life. Researchers found that heat inside a tidally locked exoplanet could ...

For thousands of years, humanity has looked up at the stars asking the same question. Are we alone? Then one day, it finally ...

Deep beneath the oceans' crashing waves lies a hidden landscape more alien than many of us could ever dream. Below the ...

NASA’s Viking 1 lander set down in the Chryse Planitia region of Mars. Its identical twin, Viking 2, followed on Sept. 3 of ...

The hunt for ancient life on Mars just got an important test run. Scientists confirmed that the Rosalind Franklin rover's ...

The search for life beyond Earth has always been full of surprises. Strange radio signals have sparked excitement. Odd gases on distant worlds have raised questions. Even ordinary objects have been ...

Are we alone in the universe? Consider mysterious "extraterrestrial" radio signals. Unexplained gases on other planets.

Project Hail Mary, Solaris, and The Hitchhiker's Guide to the Galaxy are all among the very best sci-fi books set in space.