Leonard David

The Galileo Project is the first systematic scientific research program in a search for artifacts or remnants of extraterrestrial technological civilizations.

Rocket Lab aims to send a probe to Venus soon, and a new paper lays out the details of the ambitious mission.

Artemis Base Camp will be established in the moon's south polar region, in a to-be-determined spot that features plentiful sunlight, direct-to-Earth communications and good access to water ice.

Perseverance Mars rover is gathering up samples of Martian rock and soil that could help tease out an answer concerning past life on Mars.

For planetary scientist Alan Stern, witnessing the 20th century deep sea sarcophagus that is the Titanic serves up analogies to spaceflight.

Frank White's "overview effect" has increasingly become iconic for explaining a very human condition attached to the space travel experience.

The Korea Pathfinder Lunar Orbiter, also known as Danuri, is scheduled to launch atop a SpaceX Falcon 9 rocket next Tuesday (Aug. 2).

Bill Ingalls has been a professional photographer for three decades and has served as the Senior Contract Photographer for NASA Headquarters since 1989.

Launching an interstellar probe sounds exceedingly lofty, ambitious, and tough to do. But there's no need to wait for new technology, say advocates.

Scientists searching for signs of extraterrestrial technology should keep an eye out for city lights on exoplanets, a new study suggests.

Valles Marineris, the Grand Canyon of Mars, is ripe for human exploration that can uncover the planet's history and its capacity to sustain microbial life.

Space.com reached out to UFO groups and leading experts in the field to get their thoughts on NASA's new endeavor.

Artemis moonwalkers will need innovative technologies in order to explore more of the lunar surface than ever before and forge the first long-term presence on the moon.

New Horizons is still on duty in extended mission mode, diving ever deeper into the Kuiper Belt to examine ancient, icy mini-worlds in that vast region beyond the orbit of Neptune.

A NASA concept mission called Mars Life Explorer would dig into Red Planet ice, hunting for signs of living organisms.

The 10-foot-tall (3 meters) Mars Ascent Vehicle will blast rock, sediment and atmospheric samples off Mars in the early 2030s, in the first-ever rocket launch from the surface of another planet.

The Space Force's X-37B has now been aloft for 773 days, just a week shy of the program record.

The internet is abuzz with rumors that China may have picked up signals from an alien civilization. But the pings are probably just Earthly interference, experts say.

Mars astronauts could get a lot of science work done in 30 days on the Red Planet, even if they have to spend most of their time working to stay alive and stay healthy.

The three Shenzhou-14 astronauts — commander Chen Dong and Liu Yang and Cai Xuzhe — are settling in for a lengthy stay aboard China's Tiangong space station.

A high-tech pioneer for NASA's moon-orbiting Gateway space station is being readied for liftoff early next year.

NASA's plan to "reboot" human exploration of the moon will get kick-started soon by a spacecraft the size of a microwave oven.

Early next month, Rocket Lab is slated to launch a pathfinding cubesat mission that supports NASA's Artemis return-to-the moon program.

Boeing's Starliner capsule is scheduled to return to Earth on Wednesday (May 25), and teams on the ground have been gearing to welcome the spacecraft home.

Tuesday's (May 17) event was the first open congressional hearing about UFOs in more than 50 years.