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

In 2017, the mysterious interstellar object 'Oumuamua passed through our Solar System, sparking a heated debate about its true nature. While it was initially considered just another asteroid or comet, ...

In October 2017, astronomers detected a mysterious object speeding through our Solar System,unlike anything observed before.

A newly discovered object speeding through our solar system could be something far stranger than a comet, possibly even alien ...

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

Aliens are visiting our solar system. Not little green men, sadly, but natural alien objects—cosmic bodies such as comets and ...

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

As ‘Oumuamua whizzed by the Sun, it accelerated at a rapid speed, suggesting that it was propelled by sunlight as a solar sail spacecraft might have been — a type of spacecraft that would ...

‘Oumuamua is not your garden variety “minor planet.” It’s 800 meters long, 80 meters wide, composed of rock and ice mushed together into the bizarre shape of a cigar.

‘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 ...

The space object named Oumuamua (Hawaiian for "scout" or "messenger") got lots of overheated attention this week after a widely respected Harvard scientist co-authored a paper suggesting the ...

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.