3I/ATLAS has now made its closest approach to the sun and Earth and is now heading back out toward the outer solar system. On ...

I/ATLAS may have moved away from Earth as it makes its way out of the solar system, but this interstellar intruder continues ...

Learn how you can say farewell to comet 3I/ATLAS as it passes by Earth on Dec. 19, 2025, and what we have learned during its ...

Scientists tracked interstellar comet 3I/ATLAS and found rotating jets in a rare sun-facing tail during its 2025 pass through ...

The giant planets weren't always where we find them today. Jupiter, Saturn, Uranus and Neptune formed in a more compact ...

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

Jupiter is the largest planet in the solar system, known for its massive size, strong gravity, powerful storms and many moons ...

A new explanation for the solar system's radioactive elements suggests Earth-like planets might be found orbiting up to 50 ...

After less than a year in orbit, the Southwest Research Institute-built PUNCH spacecraft have made major accomplishments, ...

Space is always inspiring and 2025 was no exception, with finding Betelgeuse’s buddy, debuting a prolific survey telescope ...

Astronomers traced a mysterious 'scar' of ionized gas around the solar system to two stars that had a close flyby with our sun millions of years ago.

With the vastness of the Universe, everything in it seems so spread out. But some objects are closer than you might realize. Every now and then, a random interstellar asteroid passes through the Oort ...