Explore astronomy, from the latest trip to the International Space Station to alien planets outside our solar system.
The space agency was forced to respond to rumors that the icy comet would bring about the end of the world.
Insights into Titan's weather could help scientists better understand the weather here on Earth.
The crew will visit museums, talk with Stephen Colbert and hang out with Elmo.
SpaceX is one of a few firms making a spaceship to replace the now-defunct U.S. shuttle, which had been used to carry supplies to the orbiting outpost.
Collision provides a model for how the Milky Way and Andromeda galaxies will merge billions of years from now.
NASA holds an online viewing party for eager skywatchers — including a duo of scientists to answer questions.
Search for Extraterrestrial Intelligence Institute was forced to shut down its radio telescope array designed to hear potential signals from aliens.
Shuttles come face to face for the first time on their way to retirement.
Some academics claim that solar storms can affect humans, altering moods and leading people into negative behavior through effects on their biochemistry.
Scientists are unsure what causes the planet to be so dark, but they believe it could be 'a chemical we haven't even thought of yet.'
SETI's telescope array went live in 2007 but was forced to shut down in April due to lack of funding.
Star gazers will have to get up early to catch the meteor shower so as to avoid the full moon's brightness obstructing the view.
While all major X-class solar flares are serious events, they pose little threat to Earth unless the flare is aimed directly at the planet.
The findings add weight to the long-debated theory that some of the materials needed to make early life forms came to our planet via meteorites.
NASA's Innovative Advanced Concepts project aims to investigate futuristic technologies such as 3-D printing and novel propulsion techniques.
Activist and author blogs about politics, energy and Earth's resources.
Science journalist blogs about humans and other wildlife.