Space solar power advocates may soon get their day in the sun, but one scientist worries that a U.S.-based project is promising too much, too soon.
A multi-trillion-watt laser has simulated how a stellar jet from a young star collides with interstellar gas.
NASA's pursuit of space-age technology has come down to Earth in the form of anti-gravity treadmills, UV-resistant clothing, and better robots.
A new Teflon and other nanomaterials will launch to the space station and undergo testing under the extremes of radiation and temperature.
Carbon nanotubes can create more reliable satellite thrusters that save on propellant, reduce launch and cut maintenance costs for satellites.
NASA engineers have developed electron beam fabrication technology that may remind people of Star Trek's replicator, and awaits launch for testing on the International Space Station.
The minutes-long test of NASA's new Ares I-X rocket is the culmination of years of work by 1,000 people, including the rocket-minded firm ATK Space Systems.
A propellant made of water and aluminum nanoparticles could provide greener rocket propellant and store hydrogen for fuel cell usage.
Researchers are designing a mission to sail an unmanned, nuclear-powered capsule on Saturn's moon Titan.
A dusty red planet Mars and Jupiter's icy moon Europa may hold the best hopes for scientists trying to track down extraterrestrial life in our solar system.
NASA's LCROSS mission represents just the latest in a long line of spacecraft to wallop the moon and other bodies in the solar system.
New studies of mixotrophic algae have shown how such organisms could survive the darkened skies that follow a major asteroid impact.
A $1.5 billion cosmic ray detector scheduled to go up to the space station will help scientists hunt for antimatter galaxies.
Robots may become increasingly autonomous for NASA missions and tasks on Earth, but a suggested revision of Asimov's Three Laws puts the burden of responsibility back on humans.
Pluto debate aside, scientists have found similar confusion regarding planetary definitions at the big end of the scale.
The Planetary Society hopes to refit a NASA design to make a third U.S. attempt to fly the first solar sail in space.