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 ...

Breakthroughs, discoveries, and DIY tips sent every weekday.

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.

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 ...

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 ...

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 ...

Launched in March, NASA's SPHEREx space telescope has completed its first infrared map of the entire sky in 102 colors.

The Southwest Research Institute-led Ultraviolet Spectrograph (UVS) aboard NASA’s Europa Clipper spacecraft has made valuable ...