May 11, 2013 NASA sent two astronauts on a spacewalk Saturday to fix an ammonia leak in one of International Space Station's power systems.
May 10, 2013 Astronauts discovered an ammonia leak in a system designed to keep the International Space Station's power supply cool.
May 7, 2013 Turns out our solar system — with its medium sized sun, its four small rocky planets, its four big gassy ones farther out — isn't like the others. We are unusual. Very unusual. Says one prominent astronomer, we are "a bit of a freak."
May 2, 2013 NASA is looking for three haiku to include on a DVD that will travel to Mars aboard a spacecraft this fall. And everyone who submits a poem will have their name included.
May 1, 2013 Last year, the Fermi Gamma-ray Space Telescope experienced a dangerous close pass with a Cold War-era spy satellite.
April 30, 2013 SpaceX calls it the "Grasshopper" — it's a rocket that doesn't fall back to Earth haphazardly after launch. It carefully returns itself to the launchpad standing up, right where it started.
April 29, 2013 NASA is calling it "The Rose." By any other name, it's a mammoth storm on Saturn, spanning an estimated 1,250 miles with winds swirling at hundreds of miles per hour. The "false-color" image is among the first batch of high-resolution pictures of Saturn's north pole.
April 29, 2013 The space tourism company says the vehicle hit Mach 1.2 and reached 56,000 feet in its first rocket-powered test.