There might not be a mysterious 'dark' force accelerating the expansion of the Universe after all.

New calculations put the date much closer than we should be comfortable with

The Pulsed Plasma Rocket could significantly shorten a round-trip to Mars, reduce risks to astronauts' health, and be ready to launch in 20 years.

SpinLaunch is developing a large rotating arm that uses kinetic energy to fling 440-pound satellites into low orbit.

Faster-than-light warp drives are theoretically possible to build, and if aliens are using them, we should be able to detect the gravitational waves produced when one goes wrong

While it won't make a useful spaceship engine, it may tell us more about relativity.

A phenomenon called a "glory" may be happening on a hellishly hot giant planet.

METI International is a scientific organization dedicated to transmitting powerful radio messages to extraterrestrial life.

DSS-43 is the only antenna that can communicate with the probe

From 'Dune' to Dogecoin, the first true backup of human civilization contains a few surprises.

NASA has selected a new crew of four volunteers to participate in a simulated mission to Mars within a habitat at the agency’s Johnson Space Center in Houston.

A reanalysis of 50-year-old Apollo mission data long abandoned by NASA has revealed 22,000 previously unrecognized moonquakes, almost tripling the known number of seismic lunar events.

The magnetic fields that spiral around our galaxy's supermassive black hole Sagittarius A* have now been revealed by twisted light.

Agency says SpaceX craft could curb International Space Station operations

Earth's closest cosmic companions, known as 'minimoons' or 'quasi-moons', could hold the secrets to the history of our early solar system.

The agency is accepting applicants for the second cohort of its Mars simulator mission. Participants will live and work from a 3D-printed, 1,700-square-foot facility at NASA's Houston space center.

Images shared by NASA show the U.S. East Coast is actually sinking — including the land that holds major cities like New York​ and Baltimore.

We thought we knew how Voyager would end. The power would gradually, inevitably, run down. The instruments would shut off, one by one. The signal would get fainter. Eventually either the last instrument would fail for lack of power, or the signal would be lost. We didn’t expect that it would go mad.

NASA put out an open call on Friday for volunteers to participate in its yearlong Crew Health and Performance Exploration Analog (CHAPEA 2) mission. The space agency will select four people for a crew that will be housed in its 1,700-square-foot 3D-printed habitat in Houston.

Using data from the retired Stratospheric Observatory for Infrared Astronomy (SOFIA)—a joint project of NASA and the German Space Agency at DLR—Southwest Research Institute scientists have discovered, for the first time, water molecules on the surface of an asteroid.