Interstellar comet 3I/ATLAS was almost called 3I/Rubin, after researchers found that the giant survey telescope ...

The Southwest Research Institute-led Ultraviolet Spectrograph (UVS) instruments aboard ESA's Jupiter Icy Moons Explorer ...

Our solar system is currently passing through the Local Interstellar Cloud, a region of highly diluted gas and dust between ...

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

A mysterious comet from beyond our solar system is giving astronomers a rare glimpse into alien worlds — and it may have ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. Astronomers have spotted ...

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.