A possible new mission called Trident aims to explore Neptune's strange moon Triton.

More than 8,500 active-duty Air Force service members have volunteered to join the U.S. Space Force — the nation's newest military branch.

NASA astronauts Doug Hurley and Bob Behnken, who recently became the first crew to fly in SpaceX's Crew Dragon spacecraft, talk about the "overview effect" and their first week of work in space.

Here's Space.com's guide to some of the biggest science fiction movies slated to release this year: "The New Mutants," "Black Widow," "Wonder Woman 1984," "Dune" and more.

NASA satellite data revealed significant reductions in air pollution over the major metropolitan areas of the Northeast United States as people reduce travel during the coronavirus outbreak.

Astronomers have probed the Perseus galaxy cluster in search of an as-yet undetected particle that would help support string theory.

Slooh astronomers will livestream a free astronomy lesson on Thursday (March 19) for K-12 students who are homebound during the coronavirus pandemic.

The animated TV series "Space Racers" has shared educational content for students during school closures amid the coronavirus outbreak.

A distant globular cluster that's home to dozens of fast-rotating stars could provide new clues about the formation of the Milky Way and the gas halo that surrounds the galaxy.

The red supergiant star Betelgeuse is nearing the end of its life, and researchers are preparing for what it will look like when the star explodes in a supernova.

The European Southern Observatory has closed several of its facilities and canceled public events in Germany and Chile in response to the coronavirus outbreak.

Earthly slime mold models have helped astronomers map the cosmic web that connects galaxies throughout the universe.

NASA has contracted SpaceX to launch its Psyche mission to a unique metal asteroid in July 2022.

Astronomers have imaged more than 300 newborn stars, revealing new clues about the early stages of star formation and the birth of planets.

NASA's Orion spacecraft has achieved a new milestone with a successful final test of the vehicle's attitude-control motor Tuesday (Feb. 25).

Meteorite samples from an ancient impact site in Germany may offer new clues about the history of oceans and life on Mars.

A volatile double star system appears to change its behavior rapidly and unpredictably like a cosmic story of Dr. Jekyll and Mr. Hyde.

The European Space Agency's Solar Orbiter has sent back its first measurements from space, confirming the successful deployment of the boom that carries many of its sun-gazing instruments.

The private space company Orbex recently allowed cameras into its rocket factory for the first time, offering a glimpse at where the commercial orbital rocket called Prime is being built.

Early cosmic impacts may have influenced the evolution of Mars, suggesting that the Red Planet formed much slower than previously thought.

Record-breaking NASA astronaut Christina Koch will return to Earth Thursday (Feb. 6) after spending 328 days in space, during which she completed numerous science experiments.

A stunning rainbow-colored cloud of gas surrounds a pair of stars that duked it out a few hundred years ago.

A new crew has arrived at the Mars Desert Research Station for a two-week dual-habitat simulation.

Streams of plasma from the sun create "chirping" and "whistling" noises heard by NASA's Parker Solar Probe.