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.

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

An international team of astronomers has discovered a distant planetary system that challenges long-standing theories of how ...

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

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

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

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 ...

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 ...

Astronomers have long believed that planetary systems follow a familiar blueprint. Small rocky planets ...