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 ...

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 ...

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

The comet is the third object ever confirmed to have entered our cosmic neighborhood from elsewhere in the galaxy. Space ...

NASA’s Parker Solar Probe and Europa Clipper captured detailed observations of interstellar comet 3I/ATLAS in 2025, providing data on its trajectory, composition, and behavior as it passed through the ...

This third confirmed interstellar comet to enter our neighborhood has captivated astronomers and sparked debate within the scientific community. NASA ...

New high-contrast images from SPHERE show a stunning variety of debris disks shaped by collisions of tiny planet-building bodies. The structures often resemble our asteroid and Kuiper belts, hinting ...

Before the ribbon-cutting for the solar system walk on the Columbia Greenway Rail Trail on Nov. 29, created by WHS Astronomy Club members Krystyna Goulette and Kaitlyn Goulette, president of the Club, ...

Scientists have been cataloging comet 3I/ATLAS’s journey through the Solar System since July, tracking major milestones as ...