Last year, an interstellar traveler entered our solar system. Some speculated that it was an alien spacecraft, but it turned ...

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

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

Scientists are calling for a lunar quarantine facility where samples from Mars, the Moon, and beyond would be examined before being brought to Earth. They warn that even a tiny alien microorganism ...

ESA's Gaia mission has determined he orbits of 154,741 asteroids in our solar system. Credit: ESA/Gaia/DPAC ...

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

Avi Loeb’s White House panel has asked the Pentagon for videos and files on unexplained aerial sightings ...

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 ...

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

A recently discovered "super Earth" located around 25 light-years from our planet is not as massive as previously thought, ...

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.