Explore astronomy, from the latest trip to the International Space Station to alien planets outside our solar system.
Scientists lost communication with Galaxy 15 on April 5, and now they are concerned it will disrupt other satellites.
The flickering lights over our northern and southern-most skies at times seem like a mystical offering.
New research shows soft X-rays, once dismissed as interference, can help predict space storms that threaten Earth.
Finding the 'stuff of pencils' could reveal important insight into the start of life on Earth.
The image was painstakingly built up, slice by slice, by a $875 million telescope named Planck.
Scientists hope dust samples from the asteroid Itokawa could help reveal secrets about the origins of the solar system.
NASA estimates it could cost as much as $200 million a month to keep the shuttle program going beyond 2010.
Italian Northern League party leader Mario Borghezio has urged the EU to 'open the books' on UFO encounters.
The new policy envisions collaboration with other countries and with companies on new initiatives.
Aerospace giant hopes its new CST-100 capsule will replace retiring space shuttles.
Experts debate the use of nuclear weapons to deter an Earth-killing asteroid.
Sex in space may be out of bounds, but astronauts have been known to succumb to earthly passions.
Slightly more than half of the moon's surface was shaded at the eclipse's peak.
Experts sound off on misconceptions about Obama's much-maligned space plan.
The moon Io has one of the most bizarre -- and smelly -- landscapes in our solar system.
Activist and author blogs about politics, energy and Earth's resources.
Science journalist blogs about humans and other wildlife.