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

PUNCH Spacecraft Show First Complete Images Of Sun’s Corona And Solar Wind Together In A Nutshell Four suitcase-sized ...

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 ...

According to NASA, 3I/ATLAS has an icy nucleus and a coma, which is a bright cloud of gas and dust that surrounds the comet ...

Comet 3I/ATLAS is the third known interstellar comet after 2017's 1I/'Oumuamua and 2019's 2I/Borisov. It was discovered on July 1, 2025 and made its closest approach to the sun in October. Now it is ...

NASA's alien-hunting Europa Clipper spacecraft took seven hours of ultraviolet observations of interstellar comet 3I/ATLAS ...