Add Yahoo as a preferred source to see more of our stories on Google. It's possibly as big as Manhattan, likely older than our own solar system and it's traveling through space at speeds of up to ...

April is the gift that keeps on giving for astronomy aficionados. Along with sightings of the northern lights, be sure to ...

Interstellar comet 3I/ATLAS is now on its way out of our solar system, never to return. The comet was only the third-ever ...

This summer, scientists spotted an incredibly rare visitor to Earth’s solar system—a comet, now known as 3I/ATLAS, that entered our solar system from the galaxy beyond and is zipping past the sun at a ...

CNN — When interstellar comet 2I/Borisov entered our solar system last year, this time capsule from another place in the universe opened and revealed information about its origin, according to new ...

Learn how Comet 3I/ATLAS began to emit methane as it approached the sun, releasing compounds contained within its inner ...

Interstellar comet 3I/ATLAS released methane, a greenhouse gas 80 times stronger than CO₂, as it neared the Sun. This ...

Interstellar comet 3I/ATLAS showed changes in its gas composition after passing close to the sun, offering data on its ...

When a hunk of ice from another star system hurtles through our cosmic neighborhood, astronomers pay attention. When that ...

3I/ATLAS, an interstellar object identified by NASA as a comet, recently passed its closest point to the sun. Scientists around the world are observing its months-long journey to learn more about the ...

A new intriguing study of the interstellar visitor 3I/ATLAS has revealed that the object’s chemical composition shifted ...

It's possibly as big as Manhattan, likely older than our own solar system and it's traveling through space at speeds of up to 153,000 miles per hour. It's also only the third confirmed interstellar ...