Comet 3I/ATLAS arrived from beyond the Solar System carrying a chemical story unlike anything astronomers had measured before ...

While 3I/ATLAS is definitely a comet, its composition and age have remained unclear. Now, astronomers have solved these ...

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

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

Interstellar comet 3I/ATLAS carries isotopic ratios entirely outside the Solar System range, ESO’s Very Large Telescope has ...

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

Avi Loeb, a Harvard astronomer who has made headlines with his theories about alien encounters, will lead a White House ...

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

Rather than being an alien craft, 3I/ATLAS likely formed 12 billion years ago at a key moment in the early Universe ...

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

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

A strange interstellar comet discovered last year and speculated by a prominent astronomer to be an alien spacecraft could be older than our Solar System, according to a new study. The comet, first ...