Watch: Facebook Prepares for IPO
The Internet giant is expected to file the required paperwork to go public.

Watch: TechBytes (02.07.12)
Amazon may open a store in Seattle as a prelude to becoming a chain.

Watch: Failed Russian Mars Probe Re-Enters
Analytical Graphics animation of Phobos-Grunt spacecraft falling from orbit.

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.

Photos: Anniversary of NASA's Worst Tragedies
Late January is always a dark time of year for NASA's astronaut program; the anniversaries of its three worst accidents all happen in the same week. The Apollo 1 astronauts died in a cockpit fire on Jan. 27, 1967. The space shuttle Challenger exploded 73 seconds after liftoff Jan. 28, 1986. And the space shuttle Columbia broke up on return to earth Feb. 1, 2003.

Micron CEO Killed in Plane Crash
Steve Appleton, the CEO of the semoconductor maker Micron Technology, Inc., was killed in a small plane crash at the airport in Boise, Idaho today. He was 51.