A siphonophore—a colonial marine invertebrate related to the venomous stinging Portuguese Man-o-war—is scanned using Deep ...

Could humans spread Earth life beyond our planet? Astrobiologists explain where extremophiles might survive and why the risks ...

Thus far, our search for extraterrestrial life points toward Clarke’s former point, suggesting that our little blue dot is ...

When the U.S. was born, humanity was still seven years away from balloon-borne flight. Where might we be another 250 years from now, should the nation be fortunate enough to survive that long?

What makes something alive? We simply don't know, but synthetic biologists are a step closer to providing an answer thanks to ...

This new group, which is led by Harvard professor Avi Loeb, aims to advise the Trump administration and the U.S. intelligence ...

This cell-like structure can grow, feed, divide and compete. Researchers ponder what it means for the future of synthetic ...

The Cluster is a form of life organized on principles so different from anything on Earth that understanding it requires ...

Harvard astrophysicist Avi Loeb argues 3I/ATLAS and other interstellar objects may hint at alien technology, drawing fame, funding, and fierce criticism.

Why are we allowing unidentified objects to operate with impunity in our skies?” one expert testified Tuesday.

A polarizing Harvard astronomer known for splashy theories about alien visits has been tapped by the White House to lead a ...

Somewhere out there, a planet roughly the size of Earth may be orbiting a distant star in conditions that could support life.