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

With new technologies come new opportunities. And that is especially true in astronomy—with every new advanced telescope, we ...

Using emerging radio techniques refined during and after the Second World War, the astronomers detected a powerful radio ...

A set of protocols telling scientists what to do – and what not to do – if they ever detect evidence of intelligent life ...

While telescopes like the James Webb Space Telescope (JWST) can detect the chemical fingerprints of distant atmospheres, ...

Research indicates airport radar systems may unintentionally broadcast Earth's presence to aliens up to 200 lightyears away, ...

In July 2025, astronomers spotted something remarkable passing through our Solar System, an object that had not come from ...

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

A new SETI study argues that turbulent space weather around distant stars can smear out ultra‑narrow alien radio signals, ...

The “Wow!” signal is one of our best pieces of evidence for aliens, but researchers are building a compelling case for a more ...

The “Wow!” signal is one of our best pieces of evidence for aliens, but researchers are building a compelling case for a more ...

Ten days after that interview with the president, his then–special envoy for Latin America, Mauricio Claver-Carone, was ...