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Herschel and Planck launch set for May 14
Paris, April 28, 2009 The European Space Agency says it has set the liftoff date for its twin satellites, Herschel and Planck, from Europe's spaceport in French Guiana. The ESA said additional checks on the Ariane 5 ECA launcher have been completed, allowing Arianespace and ESA to schedule the launch for May 14. Herschel and Planck have already been fueled with hydrazine. Planck's three-stage active cryogenic cooler, needed to keep its instruments at extremely low temperatures, has been filled with helium-3 and helium-4. Herschel's cryogenic tanks are also being filled with superfluid helium, the ESA said. The Herschel space telescope mirror will be the largest ever launched into space. Planck is designed to observe the cosmic microwave background. The ESA has twice postponed the launch due to technical problems. Related Links Space Telescope News and Technology at Skynightly.com
Chandra Resolves A Galactic Mystery
Boston, UK (SPX) May 01, 2009An extremely deep Chandra X-ray Observatory image of a region near the center of our galaxy has resolved a long-standing mystery about an X-ray glow along the plane of the galaxy. |
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