David Freeman

The space agency is moving ahead with its long-anticipated Europa Clipper mission.

Living organisms can give off methane, but so can rocks.

Scientists say Ahuna Mons formed when salty, rocky mud rose to the surface of Ceres and froze.

Scientists say the blob may be remnants of the metallic asteroid that smashed into the lunar surface billions of years ago.

With binoculars or a small telescope, skywatchers may be able to see not just the planet itself but also its biggest moons.

If confirmed, it would be the first time seismic activity ever detected on the Red Planet.

The team created a cell-containing “bioink” and used it to 3D print the organ layer by layer.

Experts say NASA has a longstanding shortage of the super-expensive suits.

Where this tire is going, it doesn’t need roads (but can still use them).

World data shows “global warming shows no sign of slowing down or stopping.”

Comet Wirtanen hasn’t come this close for centuries and won’t come this close again for centuries more.

It’s the next step in the space agency’s mission to bring a bit of an asteroid back to Earth.

Climate scientist Rachel Licker is optimistic that transformative changes can limit sea level rise and help save our coral reefs.

Astronomers say the newly discovered dwarf planet adds to evidence for the existence of Planet X.

The cigar-shaped comet caught scientists by surprise when it whizzed past the sun last year.

Newfound exoplanet orbits a star identified with the famed science officer from “Star Trek.”

Storm expert David Nolan explains what we know and what we’re still trying to figure out.

Cassini space probe offers a never-before-seen perspective on Saturn’s intricate rings just weeks before its mission-ending plunge into the planet.

Careful how you head out for the day!