Explore astronomy, from the latest trip to the International Space Station to alien planets outside our solar system.
Many detailed features on the moon can be seen with the ordinary binoculars or small telescopes from Sept. 11-13.
Frank Culbertson, who was aboard the International Space Station on Sept. 11, lost a friend and classmate when a plane crashed into the Pentagon.
NASA adopted broader launch windows for the security of the space shuttles following 9/11.
Early computer appraisals predict that about 1,170 pounds of the satellite will survive re-entry and crash into Earth.
Learning more about solar flares can help scientists better predict the weather and prepare the Earth for disruptive solar storms.
Learning about the interior of the moon is the primary goal of a new NASA mission called Gravity Recovery and Interior Laboratory, or GRAIL.
Astronomers have found the closest, brightest supernova of its kind in 25 years, which is visible to amateur skywatchers.
Scientists are calling a star that exploded 21 million years ago in a neighboring galaxy the supernova of a generation.
Astronaut who is an 'avid outsdoorman' was stunned by the news of a wildfire raging through the state park Bastrop.
Clusters like this tend to survive for tens to hundreds of millions of years until stars are peeled off by stronger gravitational pulls.
Training to live on the International Space Station includes becoming familiar with foreign devices, spending time abroad and preparing for spacewalks.
Scientists think it's unlikely that the flags planted on the moon during each Apollo mission have survived the years.
American astronauts aboard the ISS have begun minimal preparations, namely taking video of tasks in order to quickly train future station staff.
Twin space probes will beam back information about the Moon's surface to help understand its formation and provide NASA with information for future lunar exploration.
The 25th anniversary of the art and self-expression festival had its picture taken from about 370 miles overhead.
Eco-entrepreneur on politics, energy and Earth's resources.
Russell blogs about the day's top science and eco-news.