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

I/ATLAS was recorded by several objects as it made its close pass by the sun this week which resulted in the jarring ...

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

Interstellar invader Comet 3I/ATLAS is still full of surprises — an unexpected brightening has scientists baffled ...

This is only the third interstellar comet scientists have observed. Its extreme brightening, unusual composition, and intense ...

Manhattan-sized comet 3I/ATLAS allegedly executed an unusual maneuver while approaching the Sun earlier this week, fueling ...

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

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

An interstellar comet that originated outside our solar system just made its closest pass of the sun, setting it on an ...

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

Is 3I/ATLAS a once-in-a-century interstellar comet or a genuine signal? We separate verified data from viral claims, quotes from NASA and Harvard.

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