Explore astronomy, from the latest trip to the International Space Station to alien planets outside our solar system.
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.
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.
Telescope in Hawaii containing the world’s largest digital camera will scan the skies for Earth-killing asteroids heading our way.
Mysterious 'John F' smuggled tiny wafer etched with priceless art masterpieces to the moon aboard Apollo 12.
The discovery is a candidate for imaging with a high-resolution camera, which would allow the students to look inside the cave.
European CoRoT satellite reveals 6 new exoplanets that may change how we understand the evolution of other solar systems.
Scientists propose new theory that could reshape our understanding of the universe.
Scientists think a little-known compound called pyrophosphite could have allowed first life on Earth to form.
Calvin Dale Smith of Houston has been charged with stealing Sally Ride’s flight suit worn on her historic 1983 mission.
A long time ago, in a galaxy far, far away...
The Expoxi spacecraft, originally built for another mission, will fly by the Earth on its way to the comet Hartley 2.
Activist and author blogs about politics, energy and Earth's resources.
Science journalist blogs about humans and other wildlife.