Science editor Alan Boyle's Weblog: The Galaxy Zoo and its 200,000 participants have pushed citizen science to new heights, and now they're taking their galaxy quest to the next level.
It has been a superb winter for viewing the queen of the planets, Venus. February marks the pinnacle of its evening visibility as it stands like a sequined showgirl nearly halfway up in the western sky at sunset.
No debris remains in space from the U.S. destruction a year ago of an errant spy satellite loaded with toxic hydrazine fuel, the head of the Pentagon's Strategic Command said.
Missing asteroids in our solar system may be the handiwork of rampaging giant planets as they migrated to their current positions, according to a new computer simulation.
NASA's Mars Reconnaissance Orbiter has suffered an apparent glitch that has left the spacecraft in a protective safe mode and stalled science observations as it circles the red planet.
The Phoenix Mars Lander ended its mission last November, but scientists are still pondering the data. One intriguing discovery was a nightly cycle in which water vapor in the atmosphere collapsed into the Martian soil.
President Barack Obama is proposing moderate increases in space spending. Obama emphasizes global warming research and continues plans to retire space shuttles next year while eventually returning astronauts to the moon.
Distinctive fractures in ancient lava flows on Mars suggest that water occasionally flooded portions of the planet's surface. The research piles onto previous findings that suggest the same.
Advocates of using satellites to beam solar power from space to Earth hope U.S. President Barack Obama's campaign promise to develop alternative energy sources will help resurrect NASA's interest in the technology.
NASA is aiming to launch the space shuttle Discovery next month after repeated delays caused by critical valves.