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New York NY (SPX) Jan 04, 2007 Images from the world's first HDTV broadcast from space will again flash across TV screens around the world, as the Discovery Channel replays "Space Station Live: HD," beginning at 9 p.m. on Jan. 3. The program features additional footage that highlights accomplishments attained since the orginal progam aired on Nov. 15, 2006. On that day, NASA made history with the first live HDTV broadcasts from space, in cooperation with the Japan Aerospace Exploration Agency, Discovery HD Theater and Japanese broadcast network NHK. The broadcasts featured Expedition 14 Commander Michael Lopez-Alegria on the International Space Station, with Flight Engineer Thomas Reiter serving as camera operator aboard the 220-mile-high laboratory. "HDTV provides up to six times the resolution of regular analog video," said Rodney Grubbs, NASA principal investigator. "On previous missions, we've flown HDTV cameras but had to wait until after the mission to retrieve the tapes, watch the video and share it with the science and engineering community, the media and the public. For the first time ever, this test lets us stream live HDTV from space so the public can experience what its like to be there." Known as the Space Video Gateway, the system transmits high bandwidth digital television signals to the ground that are not only spectacular, but also valuable to scientists, engineers and managers. NASA and the Japan Aerospace Exploration Agency, along with both NHK and Discovery, cooperated in this effort though a Space Act Agreement originally signed in 2002. Related Links Space Station News at Space-Travel.Com
Draper-Developed Trajectory Maneuvers ISS Without Using Propellant
Houston TX (SPX) Jan 04, 2007A new method developed by Draper Laboratory for performing large angle rotations of the International Space Station (ISS) was flight tested successfully on November 5. By scheduling a series of commands to the ISS Control Moment Gyro (CMG) attitude controller, the ISS was maneuvered through a pre-planned trajectory, referred to as the Zero Propellant Maneuver (ZPM). The ZPM is accomplished using the current Station controllers and effectors without modification to flight software.
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