Space Weather: Interfering With The Global Positioning System
15:41 11-06-2008; source: www.sciencedaily.com
You can't always trust your GPS gadget. As scientists have long known, perplexing electrical activity in the upper atmospheric zone called the ionosphere can tamper with signals from GPS satellites. Now, new research and monitoring systems are clarifying what happens to disruptive clouds of electrons and other electrically charged particles, known as ions, in the ionosphere. The work may lead to regional predictions of reduced GPS reliability and accuracy.
Technology Enrolled In Hunt For Life On Mars
03:41 11-06-2008; source: www.sciencedaily.com
Scientists looking for evidence of life on Mars have turned to technology invented by University of North Carolina at Chapel Hill researchers to help with their mission. A team from NASA's Jet Propulsion Laboratory in Pasadena, Calif., has created a device for use on the European ExoMars rover mission scheduled for launch in 2013. That space voyage is one of several planned expeditions to the red planet that will follow in the footsteps of NASA's Phoenix mission, which landed on Mars late last month and this week began preparing to test soil samples.
Global Network Of Telescopes Simulates 6,000-mile Wide Telescope
00:41 11-06-2008; source: www.sciencedaily.com
On May 22, Arecibo Observatory in Puerto Rico joined other telescopes in North America, South America, Europe and Africa in simultaneously observing the same targets, simulating a telescope more than 6,800 miles (almost 11,000 kilometers) in diameter.
Testing, Radiation Testing: Northwestern Transistors On Space Station
00:41 11-06-2008; source: www.sciencedaily.com
Transistors based on a new kind of material created by Northwestern University researchers have been lifted into outer space on the space shuttle Endeavour and attached to the outside of the International Space Station for radiation testing. The transistors, which used a new kind of gate dielectric material called a self-assembled nanodielectric, will remain there for a year as part of a NASA materials experiment to see how they and other materials hold up to the harsh space environment.
Hubble’s Sweeping View Of The Coma Galaxy Cluster
18:41 10-06-2008; source: www.sciencedaily.com
The Hubble Space Telescope has captured the magnificent starry population of the Coma Cluster of Galaxies, one of the densest known galaxy collections in the Universe. Hubble's Advanced Camera for Surveys has observed a large portion of the Coma Cluster, stretching across several million light-years. The entire cluster is more than 20 million light-years in diameter, is nearly spherical in shape and contains thousands of galaxies.
Phoenix Mars Lander Testing Sprinkle Technique
06:41 10-06-2008; source: www.sciencedaily.com
Engineers operating the Robotic Arm on NASA's Phoenix Mars Lander are testing a revised method for delivering soil samples to laboratory instruments on Phoenix's deck now that researchers appreciate how clumpy the soil is at the landing site.
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