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A Carbonyl Sulphide Blanket
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| Topic: Earth |
09/01/09 |
| Summary: In the early days of the solar system, our Sun would not have been hot enough to keep the Earth from freezing. However, liquid water was present on the early Earth. Now, scientists believe that greenhouse gasses may have played a role in keeping Earth's oceans from freezing over completely. |
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Amase-ing Life on the Ice
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| Topic: Missions |
08/31/09 |
| Summary: Far north in the arctic, the AMASE 2009 expedition team is collecting samples of unique life that inhabits the glacial ice of Svalbard, Norway. The expedition is a test for technology that could one day be used in the search for life on Mars. |
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Dusty Disks Are Blowing in the Wind
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| Topic: Cosmic Evolution |
08/30/09 |
| Summary: Astrobiologists have long studied dusty disks around stars in order to better understand how planets form and evolve. One longstanding mystery is why these disks can have such a wide variety of unique and complicated shapes. Now, a new NASA study may have some answers. |
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Dark Days for Spirit
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| Topic: Mars |
08/29/09 |
| Summary: A dust storm is causing problems for NASA's Mars Exploration Rover, Spirit. The mission team on Earth is now anxiously watching the weather reports from Mars. They hope that Spirit will soon be on the move, continuing its mission to search for signs that Mars was once habitable. |
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The Case of the Missing Ice
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| Topic: Climate |
08/28/09 |
| Summary: By modeling ice sheets in Antarctica, scientists have changed the way we think about Earth's transition 34 million years ago from warm 'greenhouse' to the current, cool 'icehouse'. The new study has important implications for how we understand climate change and its affects on the biosphere. |
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Death Rays from Space
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| Topic: Spaceship Earth |
08/27/09 |
| Summary: Life may have been significantly affected in the past by a cosmic ray blast, but researchers are still looking for the smoking gun. |
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Ice Ages Follow the Sun
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| Topic: Climate |
08/26/09 |
| Summary: Scientists have shed new light on the processes behind the Ice Ages experienced by Earth over the past 2.5 million years. Research indicates that they are ultimately linked to shifts in solar radiation caused by changes in the Earth's rotation and axis. |
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The 40-Year-Old Dream
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| Topic: Moon to Mars |
08/25/09 |
| Summary: Mark Sykes, CEO and director of the Planetary Science Institute, believes that it's time to find out if humans can permanently live and work in space. In a recent article for the Arizona Daily Star, he discussed what needs to be done to ensure that Earth-life has a future beyond its home planet. |
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The AMASEing Adventure Continues
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| Topic: Missions |
08/24/09 |
| Summary: Coverage of the 2009 AMASE Expedition to Norway's Svalbard island continues. In this installment, Adrienne Kish discusses the steps that were taken to prepare the FIDO rover for its first appearance on Svalbard, where it is collecting samples and looking for signs of life in preparation for Mars. |
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Ancient Booms and Busts
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| Topic: Climate |
08/23/09 |
| Summary: Research suggests that a period of global warming strongly influenced plants and animals some 53 million to 47 million years ago during the Eocene epoch. The study could help scientists understand the effects that climate change will have in Earth's future. |
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