Explore astronomy, from the latest trip to the International Space Station to alien planets outside our solar system.
Supernovae were incredibly bright and had a different chemical make-up than previously seen supernovae.
The potent blast from the Sun has unleashed a firestorm of radiation and will likely lead to moderate geomagnetic storm activity this week.
Check out eight amazing photos of our solar system's tiniest planet, Mercury.
Video: Shuttle Endeavour touched down safely at the Kennedy Space Center early Wednesday morning, completing its final mission to space.
Infrared images revealed the buried structures.
Video: Astrophysicist is using 3-D images generated by a supercomputer to understand what happens with a supernova explodes.
Kennedy's speech turned NASA into 'a big space-spectacular agency.'
Astronauts will try out a new set of exercises to prepare them for the change in pressure they encounter during spacewalks.
The private rocket also launched with a load of student experiments.
The six visiting astronauts of Endeavour's STS-134 mission, and the six space station residents, are juggling different sleep shifts and overnight work hours.
Scientists take a census of 20,000 galaxies and find that only four percent resemble the Milky Way.
A new photo from the Hubble Space Telescope has revealed what scientists have called a veritable galactic 'fountain of youth.'
Pope Benedict XVI asks series of questions about the astronauts' unique vantage point and how that affects their opinions on world issues.
STS-135 will be Atlantis' 33rd and final mission before it is retired.
Scientists were relieved to see the space shuttle Endeavour's prize payload — the $2 billion Alpha Magnetic Spectrometer — safely installed on the International Space Station
Activist and author blogs about politics, energy and Earth's resources.
Science journalist blogs about humans and other wildlife.