A rare visitor from another star system prompted SETI to hunt for alien technology, but the mysterious object appears to be a ...

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

New research suggests that alien radio signals may be transformed by plasma from their home stars — and scientists on Earth ...

Astronomers have sharply revised down the mass of nearby super Earth GJ 3378b, dramatically improving its prospects as a ...

Strange interstellar comet speculated to be alien spacecraft is older than Solar System - Scientists say comet represents preserved fragment of ancient planetary system ...

A mysterious object from another star system is racing through our Solar System, and every major space telescope is watching.

The nature of space, time and the evolution of life on Earth mean it’s unlikely extraterrestrial life has visited our home ...

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

A comet screaming in from another star system carried alien ice ratios never seen before. What scientists found inside its spinning nucleus is reshaping how we picture worlds beyond our sun.

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

Harvard astrophysicist Avi Loeb, known for his controversial extraterrestrial theories, is now leading a new Trump ...