Using a new technique that partly relies on artificial intelligence, researchers spotted potentially more than 10,000 new ...

A rare comet from another star system is revealing just how different alien solar systems may be from our own.

We are living in a golden age of Milky Way research and exploration. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The Milky Way is a barred ...

This particular star system, dubbed Loki after the Norse god of trickery, was consumed by our own solar system billions of ...

The presence of deuterium, an isotope of hydrogen, in 3I/ATLAS suggests the interstellar comet formed in a much colder place before our solar system existed.

When you think of outer space, you're likely picturing stars, planets and moons. But much of space is filled with clouds of ...

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We already knew interstellar comet 3I/ATLAS came from somewhere far beyond our solar system. Now scientists have more ...

Astronomers analyzed the vapors coming off the comet when it neared the sun and found it had a lot of "heavy" water. That hints it grew up in a frigid planetary system, possibly before its home star f ...

Astronomers found 'heavy water' in interstellar comet 3I/ATLAS, suggesting it formed in a cold, unusual environment beyond ...

A new study suggests that the comet that rambled past us from another star last year likely originated in a cold, isolated corner of the galaxy that had yet to gel into its own solar system.