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Far-off Solar Systems Studied Through 'Characterization by Proxy'
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| Topic: New Planets |
04/30/13 |
| Summary: 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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The Great Exoplanet Debate, part 8: The Exoplanets That Cried Wolf
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| Topic: New Planets |
04/29/13 |
| Summary: At a recent NASA conference, exoplanet scientists held a lively discussion about issues facing the search for and understanding of planets orbiting far-distant stars. In part eight of this series, the panelists debate whether the many press releases about the possible habitability of new-found planets risk "crying wolf". |
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Rethinking Early Atmospheric Oxygen
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| Topic: Geology |
04/28/13 |
| Summary: 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 |
| Summary: 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 |
| Summary: 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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Eyeball Earths
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| Topic: New Planets |
04/25/13 |
| Summary: Some alien worlds orbiting red dwarf stars might resemble giant eyeballs. Researchers are now proposing experiments to simulate these distant planets and see how capable they are of supporting life. |
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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 |
| Summary: 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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The Curious History of the Lyrid Meteor Shower
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| Topic: Meteorites, Comets and Asteroids |
04/23/13 |
| Summary: A shower of meteors known as the Lyrid meteors happens on Earth every year at around this time in April. In recent years, we've only received a moderate shower, but that wasn't always the case according to records of the Lyrids that date back 2,600 years. |
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The Great Exoplanet Debate, part 7: Questioning Exoplanet Missions
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| Topic: Missions |
04/22/13 |
| Summary: At a NASA conference, a panel of exoplanet scientists held a lively discussion about some of the most important issues facing the search for and understanding of planets orbiting far-distant stars. In part seven of this series, the audience asks questions and makes comments about exoplanet missions and development. |
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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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