President Donald Trump signed his administration's first space policy directive today (Dec. 11), which formally directs NASA to focus on returning humans to the moon.
NASA's far-flung Voyager 1 spacecraft has taken its backup thrusters out of mothballs.
Powerful landslides may rumble down Martian slopes at up to 450 mph (725 km/h), sped along by slippery ice, a new study suggests.
The spacecraft, known as InSight, has just completed "thermal vac" testing here at a facility owned by its builder, Lockheed Martin Space Systems Co.
The interstellar asteroid that zoomed past Earth last month is like nothing we’ve seen before, new observations reveal.
For the first time ever, scientists have spotted both gravitational waves and light coming from the same cosmic event — in this case, the merger of two superdense stellar corpses known as neutron stars.
SpaceX plans to eventually phase out the big rocket, which has yet to fly, as well as the Falcon 9 booster and Dragon capsule to concentrate on the Mars-colonizing BFR system.
Puerto Rico's Arecibo Observatory has sustained some significant damage from Hurricane Maria, officials reported Friday (Sept. 22).