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Hot Topic
Deep Space
Alien Life
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A Sprightly Explanation for UFOs
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| Topic: Alien Life |
02/25/09 |
| Scientists have discovered a natural explanation for "UFO" sightings in our planet's atmosphere. The phenomenon is caused by thunderstorms, which can cause mysterious "sprites" that zip across the sky. |
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Uma Explicação “Spriteana” para OVNIs
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| Topic: Alien Life |
02/25/09 |
| Os cientistas descobriram uma explicação natural para avistamentos de “OVNI” na atmosfera do nosso planeta. O fenômeno é causado por trovoadas que podem causar misteriosos sprites que sibilam pelo céu. |
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Countdown to Alien Life
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| Topic: Alien Life |
02/23/09 |
| At the most recent NASA Astrobiology Science Conference, a panel of scientists discussed different types of planets where we might find alien life. In part four of this series, the panelists discuss the time it will take for us to discover alien life in the universe. |
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Technology Worlds
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| Topic: Alien Life |
02/16/09 |
| At the most recent NASA Astrobiology Science Conference, a panel of scientists talked about planets where alien life might be found. In the third segment of this series, Jill Tarter describes different kinds of Technology Worlds. |
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Ice Age Aliens
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| Topic: Alien Life |
02/12/09 |
| The light reflected off of vegetation could be a signal of life on an alien planet. Researchers have now shown that this plant life signal can be seen even if a world is in the midst of an ice age. |
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Slime Worlds
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| Topic: Alien Life |
02/02/09 |
| At the most recent NASA Astrobiology Science Conference, a panel of scientists discussed different types of planets where alien life might be found. In part one of this series, Seth Shostak reviews the search for extrasolar planets, and Tori Hoehler describes a place of "colorful microbial goo" called Slime World. |
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Early Attempts to Contact Aliens
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| Topic: Alien Life |
01/29/09 |
| The idea that we Earthlings may not be alone is not new, nor is the idea of trying to signal our cosmic neighbors. The first era of interplanetary communication began in the 19th century. |
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Talking About Tides
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| Topic: Alien Life |
01/12/09 |
| As it orbits a star, a planet can be squeezed and flexed by intense gravitational forces. In this podcast, Brian Jackson explains how this "tidal heating" can help determine whether a planet will have life. |
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Life on Super-Earths
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| Topic: Alien Life |
12/19/08 |
| Astronomers are expanding the search for extraterrestrial life to include some very unearthly places. Their theory is that ice-covered super-Earths, which are plentiful in the Universe, could support some kinds of life. |
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Watching for Wobbles
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| Topic: Alien Life |
12/14/08 |
| New research may make it easier to detect habitable moons around distant, extrasolar planets. The new method not only identifies moons, but also allows scientists to determine their size and their distance from the host planet. |
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