Comet 3I/ATLAS is a rare visitor passing briefly through our solar system. Here’s how to find it in the night sky—and what ...

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NASA's PUNCH mission is photographing the Sun like never before. It can see comets that are invisible to every other ...

Everyone's favorite interstellar comet, 3I/ATLAS, flew past Earth overnight, coming within about 168 million miles (270 million kilometers) of our planet.

Today is one astronomers, stargazers and alien conspiracy theorists have been waiting for: interstellar comet 3I/ATLAS is as ...

Space telescopes are typically optimized either to study a small patch of the sky across many wavelengths of light or to ...

The interstellar comet 3I/ATLAS made its closest approach to Earth today (Dec. 19, 2025). Here's the latest news you need to ...

A Harvard University astrophysicist has sparked a furious debate by warning he cannot rule out that extraterrestrials are ...

Viral images of interstellar object 3I/ATLAS have generated wild claims of a hollow comet with a mysterious dark core. As it ...

NASA’s PUNCH mission captured detailed images of solar coronal mass ejections, tracking their movement from the Sun’s corona ...

During a long observation, Europa Clipper analyzed the gas plume surrounding interstellar object 3I/ATLAS. The NASA ...

The three-dimensional view will help scientists learn more about the origins of life in the Milky Way galaxy and how the ...