The mysterious "interstellar visitor" that was recently spotted whizzing through the solar system may be around 3 billion years older than our cosmic neighborhood, a new study suggests. If confirmed, ...

The astronomical community is abuzz over a newly discovered "interstellar object," only the third of its kind ever seen, which is currently shooting toward us on a one-way trip through the solar ...

Astronomers have been given the rare opportunity to study an extrasolar object after the recent discovery of the interstellar comet 3I/ATLAS. Experts tell Live Science how they are planning to observe ...

News Analysis An object said be a new planet on the fringes of the solar system isn't a true planet but probably an alien interloper from a distant star, says an expert on solar system formation. A US ...