Space Specks May Be Alien Visitors
Astronauts Rely on Sleeping Pills
Cassini Sees Methane Clouds on Titan
NASA Mars Test Called Success
Hubble Telescope Spots a Zombie Star
There may be itsy-bitsy aliens among us. Scientists say seven microscopic particles collected by NASA's comet-chasing spacecraft, Stardust, appear to have originated outside our solar system.
You might think falling asleep in space would be easy. But new research suggests the majority of astronauts don't get enough asleep, and that what sleep they do get is chemically induced.
Flying past Saturn's moon Titan, NASA's Cassini spacecraft has caught a few glimpses of methane clouds speeding over the enormous moon's hydrocarbon seas in its northern polar region.
Engineers say a test mission sending a saucer-like vehicle high above the Earth met its goal, flying at 190,000 feet at more than 4x the speed of sound and simulated Martian landing conditions.
With the help of the Hubble, a team of researchers has spotted a "zombie star" lurking in deep space. What is this astronomical equivalent of the walking dead, and how did it get there?