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Saturn's moon Titan looks a bit like Earth, but is, in fact, very different.

Surprise! Saturn's huge moon Titan may not have a buried ocean after all

By Charles Q. Choi published

"We're not certain if having widespread liquid pockets instead of a global ocean makes Titan more or less habitable."

Search for Life
Promo image for Fallout Season 2

Best Fallout gifts to spend your caps on

By Alexander Cox published

We've rounded up the best Fallout gifts across the wasteland ahead of season two of the hit TV show, available to stream this month.

Space Movies & Shows
A gray spacecraft is seen floating above the ocean on Earth

Crewed Russian spacecraft meets up with ISS | Space photo of the day for Dec. 17, 2025

By Kenna Hughes-Castleberry published

The Soyuz launched on Nov. 27, 2025 from the Baikonur Cosmodrome in Kazakhstan.

International Space Station
A mockup of a private space shuttle with different compartments for key areas in the overall round structure

Experiments on a private space station: Vast asks scientists for research proposals

By Andrew Jones published

The California startup Vast has opened a call for scientific research aboard its Haven-1 private space station, which is set to launch atop a SpaceX rocket next year.

Human Spaceflight
Two photos with the one on the left of a man wearing a green long-sleeved shirt and the image on the right a pixelated picture of 3I/ATLAS as a ball of yellow light with green and blue light emanating from it outwards.

Interstellar comet 3I/ATLAS wasn't supposed to be there — meet the astronomer who discovered it

By Kenna Hughes-Castleberry published

Dr. Larry Denneau of the University of Hawaii is nothing like your typical astronomer.

Comets
graphic with night sky in large font and silhouettes of people below looking up at the night sky.

Night sky tonight: Catch the mighty hunter Orion shine in the southeast on Dec. 17

By Jamie Carter last updated

Find out what you can see in the night sky for tonight, from planets and stars to dazzling meteor showers.

Stargazing
An Arianespace Ariane 6 rocket launches two Galileo navigation satellites from Kourou, French Guiana on Dec. 17, 2025.

Europe's Ariane 6 rocket launches its 1st pair of Galileo navigation satellites (video)

By Josh Dinner last updated

Europe's Ariane 6 rocket launched a pair of Galileo satellites just after midnight on Wednesday (Dec. 17), adding to the continent's geopositioning constellation.

Launches & Spacecraft
A wildfire is seen in a forested mountainside, with orange flames among green pine trees and smoke drifting to the top right of the image

Wildfire smoke lofted miles high could have an unexpected effect on Earth's climate

By Stefanie Waldek published

New measurements demonstrate that smoke particles in the upper atmosphere are twice the size of lower-altitude ones.

Earth
A grayscale image shows a close up of the sun and shows a solar wind changing direction, curving to the left of the image

NASA's Parker Solar Probe captures solar wind doing a 'U-turn'

By Sharmila Kuthunur published

NASA's Parker Solar Probe captured solar material looping back to the sun, revealing how it recycles magnetic energy and shapes future solar storms.

The Sun
a female meteorologist in a red dress delivering a weather report

Steven Spielberg finally reveals 1st trailer for new UFO film 'Disclosure Day', and now we're terrified

By Jeff Spry published

Emily Blunt and Josh O'Connor star in Universal Pictures' eerie alien invasion project coming next summer.

Entertainment
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