About a century before Glacier Bay became a national park, conservationist John Muir visited the landform now called Russell ...

The crescent moon aligned with Venus and the bright star Regulus on September 19, creating a rare celestial conjunction in ...

Did you see the bright star next to the moon? That was Venus, and part of a conjunction between the moon, Venus and the star ...

A new NASA mission will capture images of Earth's invisible "halo," the faint light given off by our planet's outermost atmospheric layer, the exosphere, as it morphs and changes in response to the ...

The bottom half of the world, known as the Southern Hemisphere, is about to be treated to a partial solar eclipse that won't be visible in the US.

The formation of the island is a concern to experts, highlighting the broader issue of glacier retreat caused by climate change.

On Sept. 21, Earth will find itself in between Saturn and the Sun. Here's everything you need to know about this astronomical ...

From incredible discoveries about the natural world to archaeological finds and new learnings about our solar system, here ...

NASA Glenn is leading America's urgent push to beat China in establishing the first lunar power plant by 2030, with ...

The Sun’s intensity ebbs and flows over decades, and during periods where it’s more intense, it’s more prone to solar storms.

Hayabusa2 is now facing an unexpected challenge: the asteroid it is targeting for its next visit is much smaller than ...

Kevin France, a professor of astrophysics at the University of Colorado Boulder, discusses the Habitable Worlds Observatory, ...