Explore astronomy, from the latest trip to the International Space Station to alien planets outside our solar system.
The mission, which sounds like the theme of 'Deep Impact', would take off in 2106 to take samples of the dangerous asteroid.
Scientists explore how moon dirt could feed plants in future space station greenhouses.
These giant exoplanets are closer together and more tightly bound than any previously discovered planets.
The space agency pours cash and ideas into new innovations for cleaner airplanes.
Video: Astronomers use infrared "eyes" to shed light on these enigmatic cosmic structures.
Inventors hope to market their suit, which includes a roomy helmet and dexterous gloves, to private firms.
Respected scientist redefines gravity -- and possibly the way we see the universe.
Pulsars, or stars that pulse due to rapid spinning, may be the best way to keep time in space.
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.
Italian Northern League party leader Mario Borghezio has urged the EU to 'open the books' on UFO encounters.
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.
Activist and author blogs about politics, energy and Earth's resources.
Science journalist blogs about humans and other wildlife.