K2-18b is one of the most promising worlds for the search for extraterrestrial life, so astronomers conducted an unusually ...

What is the Kardashev Scale? Elon Musk sees it as a vision for humanity's future, but scientists say the reality is more ...

Why do we tend to assume that UFOs are crafts carrying alien beings rather than alien beings themselves? How the UFO ...

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

Scientists suggest the Moon could act as a quarantine checkpoint before samples from Mars are brought back to Earth.

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

SpaceX CEO Elon Musk believes that "SpaceX will be worth more than the rest of Earth if we accomplish our goals." ...

An international team of scientists has measured the extraordinary amount of space dust that reaches Earth’s surface every ...

A Soviet astronomer in the 1960s proposed a scale to classify hypothetical alien civilizations. Here’s why the framework is ...

Get the latest federal technology news delivered to your inbox. You might think this column is about UFOs and the Pentagon'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 ...

When it comes to the search for life elsewhere in the universe, methane and other chemical compounds are seen as signs of ...