July 21st, 2006 by me
Ring nebula. Image credit: Goodrich/Bolte/W. M. KeckClick to enlarge
A team of astronomers recently used Arizona’s Infrared-Optical Telescope Array (IOTA) of three linked telescopes to peer 4 billion years into the future, when our Sun balloons up to become a red giant star. The three instruments act as a powerful interferometer, providing a view that would only be possible with a much larger instrument. They observed several red giant stars – the eventual fate of our Sun – and discovered their surfaces to be mottled and varied, covered with enormous sunspots.
Category: Astronomy |
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July 21st, 2006 by me
Columbus laboratory. Image credit: ESAClick to enlarge
NASA today announced the astronaut assignments for the upcoming STS-122 space shuttle mission, tentatively scheduled for October 2007. The commander will be Stephen N. Frick, and the pilot will be Alan G. Poindexter. The mission specialists will be Rex J. Walheim, Stanley G. Love, Leland D. Melvin and European Space Agency astronaut Hans Schlegel. During this mission, the space shuttle will deliver the European Space Agency’s Columbus laboratory to the International Space Station.
Category: Space Shuttle, Space Station |
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July 21st, 2006 by me
Xanadu region on Titan. Image credit: NASA/JPL/SSIClick to enlarge
New radar images of Titan show surprisingly familiar terrain on Saturn’s largest moon. The radar images show a strip 4,500 km (2,796 miles) long, straight through the Xanadu region. Some images show hills, valleys and dark sand dunes cut by river networks – the similarity to Earth is striking. Of course, Titan is so cold it can’t be water; these rivers are probably formed by liquid methane or ethane. Cassini will return to Titan on Saturday, July 22 and capture images of the northern latitudes.
Category: Saturn |
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