Researchers have made groundbreaking observations of interstellar comet 3I/ATLAS using NASA's James Webb Space Telescope.

TheJames Webb Space Telescope has found that the water ice in interstellar comet 3I/ATLAS contains unusually large amounts of ...

Learn more about the unique ice grains from comet 3I/ATLAS and how they may hold clues to the building blocks of planets.

The James Webb Space Telescope finds comet 3I/ATLAS's chemistry resembles that of some icy worlds beyond Neptune in our Solar ...

But not in the way you'd expect.

Interstellar comet 3I/ATLAS, observed by NASA's James Webb Space Telescope, displays unique ice grain characteristics, ...

A Southwest Research Institute–led study used NASA's James Webb Space Telescope to examine ice grains streaming from ...

3I/ATLAS is surrounded by “a complex jet structure,” new images show, sparking fresh speculation that the Manhattan-sized interstellar object could be an artificial alien craft. The images, captured ...

Add Popular Science (opens in a new tab) More information Adding us as a Preferred Source in Google by using this link indicates that you would like to see more of our content in Google News results.

The interstellar object "3I/ATLAS," which flew into the solar system in 2025 and is now quietly moving away, has been the ...

3I/ATLAS, the third known interstellar object to enter our solar system, after 'Oumuamua (discovered in 2017), was the first such object, and the second was 2I/Borisov (discovered in 2019). It is set ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. A deep image of interstellar Comet 3I/ATLAS captured by the ...