The finding is significant because the internal composition of 3I/ATLAS could suggest that the planetary system from which it originates has a unique chemical makeup.

On December 19, 2025, 3I/ATLAS will arrive closest to Earth at a separation of 269 million kilometers, when hundreds of ground-based telescopes as well as the Hubble and Webb space telescopes will ...

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

The comet could be older than our solar system. The comet is also distinct because nickel vapor was detected in the gas ...

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

A BBC article about moon landing conspiracy theories points out that when Armstrong and Aldrin placed the American flag on the moon, their movements caused the flag to ripple. After they stepped away, ...

I/ATLAS is the third interstellar object ever discovered in our solar system. Telescope observations suggest it is a roughly 7-mile-wide (11 kilometers) comet zooming at more than 130,000 mph (210,000 ...

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

Here's where Comet 3I/ATLAS, Lemmon and SWAN are in the Halloween sky.

The interstellar object 3I/ATLAS has sparked renewed scientific debate after data from NASA's Jet Propulsion Laboratory ...

JUICE might be bound to Jupiter, but it is fortuitously in place to peek at this object from beyond the stars.

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