Astronomers have witnessed one of our universe's biggest stars transforming into a rare stellar body, and the dramatic metamorphosis may be the prequel to a powerful supernova explosion that sees this ...

The interstellar comet 3I/ATLAS is leaving our solar system for good. Here's what to know about its journey and NASA's observations.

Remember 3I/ATLAS? Yes, the interstellar comet that made plenty of headlines in 2025 is still romping through our solar ...

The night sky promises Seattle an array of celestial wonders this year, one of which is a six-planet parade Saturday. It’s hard to articulate what exactly it is about the night sky that we find so ...

Webb maps Uranus’s upper atmosphere, revealing cooling temperatures, shifting auroras, and the effects of its tilted magnetic field.

Solar power is appealing, but the economics are tricky. Enter loanTERRA, a Seattle startup offering transparent financing and ...

A program about the spring equinox will be front and center at the University of Wyoming Harry C. Vaughan Planetarium during ...

New research using NASA’s James Webb Space Telescope examines the maximum sizes of gas giant exoplanets, measuring chemical compositions and formation processes in the HR 8799 system.

Fresh observations from the James Webb Space Telescope show how vivid auroras surge through Uranus’s tilted magnetic field ...

Saturn’s largest moon, Titan, might have formed after a collision with a lost moon, according to new research.

The Apollo missions changed how scientists understand the moon. Returning with Artemis could help solve some of the biggest lunar mysteries.

The James Webb Space Telescope has produced the first-ever three-dimensional images of Uranus’s upper atmosphere, revealing a chaotic and shimmering world of infrared auroras.