In 2017, the mysterious interstellar object 'Oumuamua passed through our Solar System, sparking a heated debate about its ...

A controversial new paper questions whether the interstellar object 3I/ATLAS is a potentially dangerous alien probe, similar ...

The space rock 3I/ATLAS is only the third confirmed interstellar object discovered by astronomers, following 'Oumuamua and ...

1I/2017 U1 (‘Oumuamua) was discovered in October 2017; shortly after, it was determined to be the first object ever seen inside the solar system that had come from beyond it. But by the time its ...

How do we know 3I/ATLAS, also called comet C/2025 N1 (ATLAS), is interstellar? Will it strike Earth? Can we visit it? Here ...

In 2017, our solar system received its first interstellar visitor, an unknown object named ‘Oumuamua. The massive visitor was believed to be over 300 feet long and baffled scientists.

'Oumuamua stirred up a bit of media excitement again in October 2018, when Loeb and his then-postdoc Shmuel Bialy submitted a preprint (since published) to the Astrophysical Journal.

"But because 'Oumuamua was so small, we think that it actually produced sufficient force to power this acceleration." As a result, any dust in the ice would remain trapped there, so you wouldn't ...

Fleeting visitor The name scientists gave ‘Oumuamua translates from Hawaiian as “a messenger from the distant past, reaching out to us”. On 19 October 2017 – 40 days after it had gone past its closest ...

If 'Oumuamua were comprised of such exotic ice, Loeb and his co-authors calculate that significant cosmic ray erosion would have whittled it down during its journey.

‘Oumuamua isn’t aliens, but it may not be an asteroid either A new analysis shows the interstellar visitor might not be what we thought. By Charlie Wood Published Nov 15, 2019 1:00 PM EST ...

‘Oumuamua, named for the Hawaiian term for messenger or scout, was discovered on Oct. 19 by the Pan-STARRS1 telescope system, which searches for nearby objects that could pose a threat to Earth.