The interstellar invader Comet 3I/ATLAS is continuing to surprise scientists, this time by brightening at an unexpectedly ...

The interstellar comet 3I/ATLAS has a thick irradiated crust that no longer resembles its home star system, simulations and ...

An interstellar comet that originated outside our solar system has just made its closest pass to the sun, brightening ...

Spacecraft have revealed that the comet—which one scientist suggests could be an alien spacecraft—is now "distinctly bluer ...

"The implication of alien technology would be huge and therefore we must take it seriously,” Harvard's Avi Loeb told Newsweek ...

Interstellar comet 3I/ATLAS on Wednesday reached its closest point to the Sun, a point known as perihelion. Although this ...

Perihelion for 3I/ATLAS takes place on Oct. 30, when the interstellar interloper will be 1.35 astronomical units (125 million ...

The chemical signatures we're observing may reflect both the comet's ancient origins and its long journey through ...

As 3I/ATLAS approached the inner solar system in September, the Nordic Optical Telescope in Spain's Canary Islands recorded a ...

As 3I/Atlas neared its closest point to the sun in its orbit, the internet was abuzz with curiosity about the comet.

Manhattan-sized comet 3I/ATLAS — which scientists suspect could have extraterrestrial origins — will reach its closest ...

When Comet 3I/ATLAS roared into the solar system this summer, it launched a scientific scramble to study what astronomers ...