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

JWST detected rising methane emissions from interstellar comet 3I/ATLAS, exposing ancient interior ice and offering new ...

The giant asteroid made waves across the world last year when it came whizzing past Earth - with some experts convinced it ...

Comets have played an interesting role in the history of astronomy. Since antiquity, many cultures saw them as omens or ...

When the interstellar object 3I/ATLAS entered the Solar System, astronomers quickly realized it was unlike anything they had seen before. Its age, trajectory, composition, and origin sparked intense ...

For the first time in more than 15 years, the International Academy of Astronautics (IAA) Search for Extraterrestrial ...

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.

Avi Loeb, Harvard astrophysicist known for bold alien theories, will lead a Trump administration-backed team investigating UFOs and their security risks.

A Harvard University cosmologist who has suggested alien life forms could be sailing into the solar system disguised as meteors is leading the Trump administration’s secretive new scientific advisory ...

WASHINGTON — A polarizing Harvard astronomer known for splashy theories about alien visits has been tapped by the Trump administration to lead a team of outside scientists to study the national ...

Eventually, we'll launch a mission dedicated solely to studying an interstellar object. When that day comes, which one should ...

A new study proposes examining Mars and other space samples on the Moon before bringing them to Earth, arguing it would ...