SETI

Could we find alien technology embedded in moon dust?

Studying 75 meteorites falling to Earth, scientists have identified the seven stages a space rock goes through as it crashes through our atmosphere.

The Pentagon's recent spate of UFO releases represent a big shift and are of great benefit to the country, according to disclosure advocate Mike Gold.

Astronomers may have already scanned millions of more stars than they thought, a realization that might lead to new ways to hunt for extraterrestrial radio signals.

Between biosignatures and technosignatures lie noosignatures, and some scientists think they could help us find alien life someday.

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?

If and when SETI discovers alien life, then a revised Declaration of Principles guarantees that once the discovery has been verified, its disclosure will come soon thereafter.

Earth is dotted with many humongous, human-made structures. To an alien eye, they may be tell-tale signs of intelligent goings-on, betraying our existence and hinting at our capabilities.

How would people react if an alien civilization actually made contact with us? Space.com talked to experts, who shared a variety of opinions about a possible real-life "disclosure day."

A civilization capable of interstellar travel may also be one that has moved beyond conquest, excess and ecological self-destruction — and it therefore may not want to talk to us.