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Galaxies and stars in the Infrared spectrum.
Sep 4, 2003 NASA Administrator Sean O'Keefe announced today that Astronaut Dr. John Grunsfeld would replace Dr. Shannon Lucid as the agency's Chief Scientist. Grunsfeld is a veteran of four Space Shuttle flights, including two servicing missions to the Hubble Space Telescope and has studied astronomy and physics throughout his career. Lucid will return to the Johnson Space Center in Houston to assist with the shuttle's return to flight activities.
Sep 4, 2003 Astronomers believe that the Sun creates and destroys antimatter as part of its natural process of fusion reaction, but new observations from NASA's Reuven Ramaty High energy Solar Spectroscopic Imager (RHESSI) spacecraft has brought new insights into the process. The antimatter is formed in solar flares when fast-moving particles accelerated by the flare are smashed into slower-moving particles in the Sun's atmosphere (enough antimatter is created in just one flare to power the United States for two years). Surprisingly, the antimatter isn't destroyed right away; instead, it's carried by the flare to another region of the Sun before being destroyed.
Sep 4, 2003 The last of the Great Observatories, NASA's Space Infrared telescope Facility, gathered first light from two of its instruments: the Infrared array camera and the multi-band imaging photometer. These tests are part of the observatory's two-month in-orbit checkout, which will be followed by a one-month verification phase. Operators will continue to fine-tune SIRTF's focus and test out another instrument later this month. Once it's finally ready for scientific duty, SIRTF will study Galaxies and stars in the Infrared spectrum and search for signs of planetary disks forming around young stars to help us understand how our own solar system formed.
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