Microsoft co-founder Paul Allen announced plans to construct a giant aircraft to launch rockets into orbit, eventually for paying passengers.
Draconid meteor shower viewing is potentially much more exciting this year, as Earth is expected to hit some tendrils of comet dust head-on. But the peak is Saturday afternoon.
Tatooine is the mythical home of Luke Skywalker. Now, scientists have identified a planet in a binary system 200 light-years away, although the planet is more like Saturn in mass and makeup.
Jodie Foster, who portrayed a scientist working for the SETI Institute in the 1997 science-fiction film 'Contact,' has donated to help revive the ailing project, which was forced to close some of its radio telescopes earlier this year.
SETI has temporarily halted one of its chief alien-hunting tools, the Allen Telescope Array, citing lack of funding.
Alien fossils have been discovered in meteorites from outer space, claims a NASA astrobiologist. Other scientists are urging caution.
Red dwarf stars have several virtues that make them potential homes for Earth-like planets, but a new study suggests they also produce the largest solar flares ever seen.
Scientists say that Mars went through three ages, and the first age may have been habitable for life as we know it. Each stage on Mars can be found at nine different locations around the planet Earth today.
By the end of this month, astronomers expect to have found 500 planets beyond our solar system. The current count is 494, including one that may be inhabitable by humans.
Gliese 581g could be scanned for radio emissions. And its atmosphere could be observed for signs of chemicals produced by manufacturing.