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| Solar power heats NASA space shield material. Image credit: Bill Congdon, Applied Research Associates. Click to enlarge |
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| Future Titan Mission Shield Blasted By Radiation |
| Sep 8, 2005 - NASA and Sandia National Laboratories have been using a powerful solar tower to test new spacecraft materials. The tower reflects and focuses the Sun's radiation to blast spacecraft shields with the equivalent of 1,500 suns. This research effort is tied to a potential future mission to Saturn's moon Titan, which orbits in a very high-radiation environment. They have mimicked Titan's nitrogen-rich atmosphere for the tests, and the shield materials seem to have passed with flying colours. (Full Story) |
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| An artist's impression of an extrasolar world. Image credit: NASA Click to enlarge |
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| Earth-Like Planets Should Be Easy Spot While They're Forming |
| Sep 8, 2005 - Researchers at the Washington University in St. Louis have developed a "field guide" for planet hunters searching for other Earths. They modeled the chemistry of silicate vapour and steam rich environments, similar to the early stages when an Earthlike planet is forming. During this stage, the planet is covered with a magma ocean which vapourises. This is a very distinct moment in the lifetime of a planet, and should be detectable because silicon monoxide gas is easy to see in infrared and radio wavelengths. (Full Story) |
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| Asteroid Ceres Could Have Large Amounts of Water |
| Sep 8, 2005 - New observations from the Hubble Space Telescope indicate that the largest asteroid in the Solar System, Ceres, might have huge reserves of water ice under its surface. Ceres is approximately 580 miles (930 kilometers) across, and resides with many other asteroids in a belt of material between Mars and Jupiter. Ceres' crust shows evidence of water-bearing minerals. In fact, if Ceres is 25% water, it would have more fresh water than what we have here on Earth. (Full Story) |
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| Astronomers using data from Spitzer and Deep Impact are preparing a comet "soup". Image credit: NASA Click to enlarge |
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| Tempel 1's Ingredients |
| Sep 8, 2005 - When Deep Impact excavated a crater in Comet Tempel 1, it released a spew of material that has existed since our Solar System first formed, billions of years ago. By analyzing this material, scientists have come up with better recipes for how to make planets, comets and asteroids. They were expecting to see water ice and silicates, but they were surprised to see materials like clay and carbonates (ingredient in seashells), since it was believed they required liquid water to form. (Full Story) |
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