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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.

However, with 3I/ATLAS passing between Europa Clipper and our host star at the time, the spacecraft was uniquely positioned ...

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

The Jupiter-size planet was discovered by NASA's James WebbSpace Telescope (JWST) and is so strange that it challenges ...

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 ...

The mystifying 3I/ATLAS interstellar comet is blazing toward Earth and will soon come as close to our planet as it ever will.

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

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

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