The Deep Impact probe zipped past Earth Monday, the first of three flybys designed to use the planet's gravity to hurtle the spacecraft toward comet Hartley 2 for a 2010 meeting.
Solving the mysteries of the outer solar system could shed light on how our solar system emerged — as well as how life on Earth was born.
The chance of a football field-sized asteroid plowing into Mars next month has been increased to 4 percent, scientists said Friday after analyzing archival data.
Astronomers have observed for the first time a jet of matter spiraling outward from an infant star, as if a lengthy strand of curly pasta.
Mother Nature offers the sky observer in north temperate latitudes the two gifts of longest nights and a sky more transparent than usual. That's because cold air cannot hold as much moisture as warm air can.
The space shuttle Atlantis’ mission to the international space station likely will be pushed back a few more days or weeks as engineers study problems with electrical connectors in the spaceship’s external fuel tank, a top NASA manager said Thursday.
It's been a busy year for spaceflight in the U.S. and around the world, with an even more ambitious slate ahead for 2008.
For millennia, comets were believed to be omens of doom. Instead, solving the mysteries regarding them could help reveal the part they played in the birth of life on Earth.
The route to the moon and perhaps to Mars now goes through New Orleans — and the detour couldn't come at a better time in the city's struggle to rebuild its shattered economy after Hurricane Katrina.
At no time over the five decades of sending robot craft into the heavens have so many spacecraft been on duty at such a variety of far-flung destinations or en route to their targets.