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Nearby Planetary Nursery More Massive Than Previously Thought
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| Topic: Cosmic Evolution |
02/01/13 |
| Summary: Astronomers have used a new method to determine the mass of the planetary nursery around the nearby star TW Hydrae. The star's disk is much larger than previously believed, and could be forming planets similar to those of our own solar system. |
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Fossilized Conduits Suggest Water Flowed Beneath Mars Surface
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| Topic: Mars |
02/01/13 |
| Summary: Ridges in impact craters on Mars appear to be fossils of cracks in the Martian surface, formed by minerals deposited by flowing water. Water flowing beneath the surface suggests life may once have been possible on Mars. |
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Electric-Eating Bacteria
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| Topic: Extreme Life |
01/31/13 |
| Summary: Scientists have developed a way to grow iron-oxidizing bacteria using electricity instead of iron. The study could one day lead to using the organisms to turn electricity into fuel. |
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When Venus Behaves Like a Comet
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| Topic: Venus |
01/30/13 |
| Summary: Venus Express has observed Venus during a period of reduced solar wind pressure, discovering that the planet's ionosphere balloons out like a comet's tail on its nightside. |
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The Climate Effects of High-Flying Bacteria
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| Topic: Extreme Life |
01/30/13 |
| Summary: A new study shows that bacteria that survive in the harsh conditions of the upper atmosphere might affect the weather and climate of planet Earth. |
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How Changes in the Sun Impact Earth's Climate
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| Topic: Spaceship Earth |
01/29/13 |
| Summary: A new report describes some surprisingly complex ways in which the Sun affects Earth's climate. Radiation from the Sun impacts everything from the Earth's upper atmosphere down to our planet's surface, and plays in important role in shpaing the future of life on Earth. |
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The Puzzle of Why the Sun is Hotter Away From Its Surface
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| Topic: Sun |
01/28/13 |
| Summary: Solar astronomers have long wondered why the Sun's atmosphere gets hotter, rather than colder, as you move away from the star's surface. High resolution observations are now revealing the mechanism that pumps energy into the Sun's corona. |
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Curious About Life: Interview with Richard Leveille
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| Topic: Mars |
01/28/13 |
| Summary: Richard Leveille of the Canadian Space Agency is one of the scientists working on Curiosity's Chemistry & Camera (ChemCam) instrument. ChemCam's laser will target selected rocks, creating an ionized, glowing plasma that will be used to analyze their composition. |
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