Just the third-ever confirmed interstellar object has been detected in our solar system. Here's what we know. (Spoiler: It's ...

Scientists now say an interstellar comet discovered earlier this month could be one of the oldest that astronomers have ever ...

The astronomical community is abuzz over a newly discovered "interstellar object," only the third of its kind ever seen, ...

The dream of traveling to distant stars and colonizing other worlds has captured human imagination for centuries. Yet when we confront the reality of cosmic distances, that dream feels both ...

NASA confirms the arrival of 3I/ATLAS, the third interstellar object. The ATLAS project spotted it in June 2025. Its speed ...

On July 1, 2025, the Asteroid Terrestrial-impact Last Alert System (ATLAS) survey telescope, located in northern Chile, ...

Though our solar system and the movement of its planets appear relatively sedate, there are many things that could upset the ...

It was only discovered last month (1 July) by the ATLAS survey telescope in Chile and NASA was quick to confirm that the ...

A mystery interstellar object discovered last week is likely to be the oldest comet ever seen—possibly predating our solar ...

For only the third time in recorded history, an interstellar object has crossed into our solar system, creating quite the ...

A newly discovered ice comet from deep space may be over 7 billion years old, making it the most ancient comet scientists ...

Astronomers have discovered yet another alien visitor to the Solar System.