3I/ATLAS is the fastest comet ever recorded and its interstellar! NASA's Goddard Space Flight Center explains. Credit: NASA's ...

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 ...

3I Atlas was already one of the strangest interstellar objects ever detected, but its close pass by the Sun made the mystery ...

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

The second wave of observations, conducted since December 2025, have allowed scientists to better characterize the chemical ...

In a stunning stroke of luck, Hubble witnessed a comet splitting apart almost in real time. The rare observation is giving ...

Astronomers discovered interstellar comet 3I/ATLAS in images taken by the Vera C. Rubin Observatory on June 20, 2025, ten ...

The team still can't confidently rule out the existence of Europa's water vapor, especially as similar plumes have been 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 ...

An interstellar comet that has captivated astronomers this year narrowly missed becoming the first object named after the ...

The astronomer used the Atacama Large Millimeter/submillimeter Array (ALMA) in Chile to make the observations.