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.

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

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 ...

A Harvard University professor has said that 3I/ATLAS experienced a sudden "nongravitational" acceleration while passing ...

The European Space Agency's ExoMars Trace Gas Orbiter has captured unprecedented close-range data on the interstellar object ...

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

The interstellar comet 3I/ATLAS, the oldest comet ever observed, is currently on a trajectory toward the Sun, sparking global ...

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 ...

Astronomers say 3I/Atlas will be visible in parts of the US sky for a short time, giving viewers a unique look at a comet from beyond our solar system.

Is it a full moon tonight? November beaver full moon will shine for days as the biggest supermoon of 2025. Here's when to ...

The comet is on what’s known as a hyperbolic trajectory, which means that it doesn’t follow an orbital path around the sun.