Photos: The Ancient Oceans of Mars
A star nursery, the aurora as seen from the International Space Station in orbit, a storm on Saturn as big as Earth, a spectacular solar flare, and images of the cosmos from the Hubble Space Telescope.

Watch: Baltic Sea Discovery Leads to UFO Chatter
Disc-shaped object resembles Millennium Falcon from 'Star Wars.'

Watch: CES in 60 Seconds: M-Edge Super Shell
Bill Weir puts protective iPad case to the test.

Photos: One Last Look Inside Space Shuttle
American space flight over 50 years, from the selection of the first NASA astronauts to the final flight of the space shuttle.

SOPA and the Online Tsunami
The unprecedented online revolt against PIPA and SOPA, congressional bills targeting online copyright and trademark infringement, has many Washington insiders scratching their collective heads.

Suicidal Comet Lives!
Comet Lovejoy, plunging toward the sun as NASA spacecraft watched, was expected to be vaporized by the sun's heat. Instead it survived, missing the sun by less than 90,000 miles. It was observed this morning heading back into deep space.