Common bacteria found on spacecraft may be able to survive the harsh environs of Mars long enough to inadvertently contaminate Mars with terrestrial life.
They say strangers are just friends you haven't met yet - but it's not a view Stephen Hawking shares. In a new documentary series for the Discovery channel, he suggests that we should be avoiding making contact with aliens at all costs.
The Hubble Space Telescope celebrates its 20th birthday today with the release of another photo that could come straight from the cover of a 1970s prog rock album.
Viewers who feel limited by Hulu's five episode cap for each series will soon be able to pay a monthly fee for unlimited access to an entire back-catalog of TV content.
The new Solar Dynamics Observatory (SDO) could be as important to science as the Hubble Space Telescope, says NASA, as it releases its first close-up pictures of the sun.
The US Treasury Department has introduced a new makeover to the $100 bill, which now has moving images, 3D effects, and changing colors as the most robust anti-counterfeit note in the country's history.
If you plan on flying out of Atlanta this summer, you'll be one of the first to see what could be the first of many new airport kiosks: one that offers movies and music downloaded directly to a memory card.
The Venus Express spacecraft has completed an 'aerodrag' exercise, using its solar wings to catch and measure faint wisps of atmosphere just 180km above the planet.
Some very clever people with better things to do than fiddle about on a Nintendo DS have explained to the rest of us that brain training games are useless.
