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Tunguska Impact Fragments Discovered?
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| Topic: Meteorites, Comets and Asteroids |
05/05/13 |
| Summary:
In 1908, a powerful explosion occurred in a remote region of Siberia near the Podkamennaya Tunguska River. The blast left no crater, but it is thought to have been caused by a meteorite or comet exploding in the atmosphere. Now, scientists may have discovered samples from the meteorite itself. |
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NASA Rover to Explore Greenland Ice Sheet
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| Topic: Robotics & A.I. |
05/04/13 |
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From May 3 through June 8, 2013, NASA will be testing the newest scientific rover in the highest part of Greenland. GROVER will collect data that will help scientists understand changes in the massive ice sheet. |
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The Smell of Ancient Earth
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| Topic: Origin & Evolution of Life |
05/03/13 |
| Summary:
Scientists have discovered tiny fossils in rocks around Lake Superior, Canada, that provide the first evidence of organisms eating each other. The study provides insight into Earth's ancient biosphere, and might indicate what our planet used to smell like. |
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What Happened to the Dinosaur's Predecessors?
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| Topic: Origin & Evolution of Life |
05/01/13 |
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Newly discovered fossils from 10 million years after Earth's largest mass extinction show that the ancestors of dinosaurs may have appeared much earlier than previously thought. |
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Far-off Solar Systems Studied Through 'Characterization by Proxy'
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| Topic: New Planets |
04/30/13 |
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Astronomers are using a clever technique to study stars that are too far away to measure directly, and the planets they host. The method involves comparing the small, relatively cool stars to closer stars that are easier to observe. |
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Rethinking Early Atmospheric Oxygen
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| Topic: Geology |
04/28/13 |
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Scientists have provided new information about the relationship between oxygen in Earth's early atmosphere and the sulfur cycle. The study could shed light on how oxygen accumulated in Earth's atmosphere - an event that had profound implications for life on our planet. |
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Ocean Ice Tubes Provide Clues to Life's Origin
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| Topic: Origin & Evolution of Life |
04/27/13 |
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A new study indicates that brinicles, sometimes called "sea stalactites," could have played a role in the origin of life. The findings might have implications in understanding life's potential on icy moons in our solar system. |
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Looking for Life by the Light of Dying Stars
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| Topic: Alien Life |
04/26/13 |
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A new study suggests that technology advances in the next decade could allow astronomers to detect biosignatures in the atmospheres of planets around dead stars. |
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Star- and Planet-Forming Regions May Hold Key to Life's Chirality
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| Topic: Origin & Evolution of Life |
04/24/13 |
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New research may help explain why life on Earth is made of left-handed amino acids. The study indicates that circular polarization in star- and planet-forming regions could affect the formation of organic material, such as amino acids. |
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Are the Newly Discovered Planets Ideal SETI Targets?
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| Topic: New Planets |
04/21/13 |
| Summary:
NASA's Kepler mission discovered a planetary system with five small planets around a star slightly smaller than the Sun. Now scientists are wondering if life exists on any of these worlds, and whether or not it could have developed complex technology. |
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