Feed aggregator

Timing a space laser with a NASA-style stopwatch

Science Daily: Comets and Asteroids -

To time how long it takes a pulse of laser light to travel from space to Earth and back, you need a really good stopwatch -- one that can measure within a fraction of a billionth of a second. That kind of timer is exactly what engineers have built at NASA's Goddard Space Flight Center in Greenbelt, Maryland, for the Ice, Cloud and land Elevation Satellite-2.

The electric sands of Titan

Science Daily: Saturn -

Experiments suggest the particles that cover the surface of Saturn's moon, Titan, are 'electrically charged.' When the wind blows hard enough, Titan's non-silicate granules get kicked up and start to hop in a motion. As they collide, they become frictionally charged, like a balloon rubbing against your hair, and clump together in a way not observed for sand dune grains on Earth -- they become resistant to further motion.

The electric sands of Titan

Science Daily: Comets and Asteroids -

Experiments suggest the particles that cover the surface of Saturn's moon, Titan, are 'electrically charged.' When the wind blows hard enough, Titan's non-silicate granules get kicked up and start to hop in a motion. As they collide, they become frictionally charged, like a balloon rubbing against your hair, and clump together in a way not observed for sand dune grains on Earth -- they become resistant to further motion.

Wang Appointed to Head NASA’s Office of Communications

NASA: Breaking News -

Jen Rae Wang has been selected by Acting Administrator Robert Lightfoot as NASA's Associate Administrator for the Office of Communications. Wang joins NASA with more than a decade of experience at the highest levels of state and federal government in public, legislative, and media affairs both domestically and internationally, strategic communicati

Dr. Ellen Ochoa on the Flight Deck of Shuttle Atlantis

NASA: Image of the Day -

On April 15, 2002, STS-110 Mission Specialist Ellen Ochoa works at the Remote Manipulator System controls on the aft flight deck of space shuttle Atlantis. Dr. Ochoa, a veteran astronaut, is currently the 11th director of Johnson Space Center. She became the first Hispanic woman to go to space when she served on the STS-56 mission.

Pages

Subscribe to astrofoto.org aggregator