Explore astronomy, from the latest trip to the International Space Station to alien planets outside our solar system.
Endeavour should have been back from its final mission by now, but the April 29 launch was delayed after a hydraulic power generator heater failed.
Luckily the black holes are so small that they would take longer than the age of the universe to swallow the Earth whole.
Almost all of the universe is invisible stuff called dark matter and dark energy.
After a problem with the heating system, Endeavour and its crew are ready to launch on May 16.
Volcanoes believed to draw energy from the Jupiter's gravity as Io rotates around the gas giant.
Discovery provides astronomers ideal way to study star formation and evolution.
Exoplanets called hot Jupiters traveling in reverse may have flipped orbits.
The United States military's DARPA wants ideas to help s the 100-Year Starship project.
A group of NASA astronauts and scientists will test concepts and practice techniques for the future excursion on an asteroid in a simulated environment on the ocean floor.
The comet Elenin, first discovered last fall, will be making a visit to the inner solar system and near Earth soon.
After more than a week of testing and repairs on the space shuttle Endeavour, NASA has officially set the space shuttle's last launch date.
President Barack Obama views China as a potential partner for an eventual human mission to Mars. Any manned Mars spacecraft voyage would likely require international cooperation.
Missions to explore seas on Saturn's moon Titan, the interior of Mars and land on a comet are the main candidates for a 2016 launch.
The historic first American spaceflight by astronaut Alan Shepard and NASA's Messenger Mercury mission are being honored as the faces of new U.S. postage stamps.
Author Mary Roach talks about her book "Packing for Mars" and all the weird adjustments that have to be made to keep humans alive in space. It's the dirty details that are key, she says, to getting the public interested in space travel.
Eco-entrepreneur on politics, energy and Earth's resources.
Russell blogs about the day's top science and eco-news.