The comet—only the third known interstellar visitor to our solar system—will make its closest approach of the Earth this week ...

Interstellar comet 3I/ATLAS was discovered just five and a half months ago, and in that time has taken the world by storm.

While online conspiracies swirl, comet 3I/ATLAS made a close pass by Earth on Dec. 19, giving astronomers a rare glimpse of a ...

A mysterious interstellar comet known as 3I/ATLAS is about to make its closest approach to Earth in December 2025. Here's ...

Our third interstellar visitor that we have detected, comet 3I/ATLAS, has been found to contain molecules that are key for ...

I/ATLAS has passed its closest point to Earth, meaning we will soon lose sight of it for good. Some scientists want to send a spacecraft to chase down the alien comet — or the next interstellar object ...

If it survives its unusually close passage of the Sun, Comet C/2024 G3 has the potential to become the brightest comet of 2025, reaching a magnitude of -4.5—about the same brightness as Venus. However ...

You have just a few weeks left to view the "comet of the century" making its 80,000-year orbit around Earth. Comet C/2023 A3 Tsuchinshan–ATLAS will be visible with the naked eye from Earth until late ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. Have you seen the green comets yet? Two icy visitors from ...

The skies above Ohio put on quite a show in 2024 with a total solar eclipse, the northern lights, comets and more. Is 2025 gearing up for a repeat performance? Here's a look at what's coming. Will the ...