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I recently found out about Lake Vostok in Antarctica and it seems quite facinating. I've been trying to find more information on it but haven't been able to find any |
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Lake Vostok is indeed fascinating, and it is of special interest to astrobiologists because the water and any organisms it contains have been isolated from the rest of the planet for millions of years. Lake Vostok is the largest of more than 140 subglacial lakes found under the surface of Antarctica... Click here for more.
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When an orbital vehicle escapes through the Earth's atmosphere is it possible that this reduces the greenhouse effect because of the opening in the Earth's atmosphere or does it add to it because of the fuel that is being burned to get the orbital vehicle out of the Earth's atmosphere? |
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Space launches have very little influence on the atmosphere. For large rockets like the Space Shuttle that burn hydrogen and oxygen, the exhaust is composed of water vapor, which very quickly comes into equilibrium with the local atmosphere. While water vapor is a greenhouse gas, the actual amount o... Click here for more.
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Quiero saber sobre las placas tectonicas , el relieve y los sistema montaņoso como se forman , cual es su utilidad son los de america soy estudiante de la uasd . gracias |
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You can learn about tectonics and mountain building from Wikipedia under the heading "plate tectonics".
David Morrison
NAI Senior Scientist
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Is area 51 hiding u.f.o ? |
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No. Area 51 is an obsolete designation for a U.S. Air Force airfield near Las Vegas, Nevada. It is located adjacent to the Nevada Test Range, which was once used for nuclear weapon tests. This area has been used for testing experimental aircraft, which may have been interpreted as UFOs, but it has n... Click here for more.
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What is earths surface like ? I have another couple of questions to ask as well: What is its atmosphere like ?? |
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Do you live on Earth? If so you can answer this yourself. If not, please contact me!
David Morrison
NAI Senior Scientist
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My son (11, in 6th grade) and I were having one of those open-ended dinner conversation and he asked me whether there is a living organism that didn't require water. I simply didn't know. My rudimentary understanding is that water was indispensable. |
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As far as we know, all life on Earth requires not just H2O, but liquid water. Sometimes the quantities are very small, for example in algae that live below the surface of rocks in the Antarctic Dry Valleys, or microbes that survives in frozen Arctic sea ice. It is also true that most Earth life has ... Click here for more.
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I just saw the excellent film Cosmic Collisions at the Rose Center in NYC with my 14 year old. The film does a wonderful job of explaining how the moon formed from the earth. But it raised this question I couldn't answer: Why do we think the Moon didn't form an atmosphere and some form of life but Earth did given that the Moon was cosmically next door to the Earth? |
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There are two requirements for a planet to have an atmosphere: it must acquire the gas and it must keep it in. The Moon is
just not large enough to hold on to an atmosphere (less than 2 percent
the mass of the Earth). The Moon and Earth lost most of the gas that
was present at the time of the ... Click here for more.
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Hello Im one of those kids who is obsesed with zombies and the whole virus called solanum and reanimation of the body. But is it possiable to shock something so hard that it actually brings it back to life but only with a primative instinct? |
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No. There is no such thing as a zombie or reanimation of a body. It sounds to me as if you have taken seriously the fictional book "Zombie Survival Guide" published in 2003. This sort of fantasy may be fun to think about, but please don't confuse it with reality.
David Morrison
NAI Senior... Click here for more.
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What role did stromatolites play in the evolution of life on earth - was it used as food for new life? What new life could have used stromatolites for their nutrient needs? How did this effect the changing environment on land and in the seas? |
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Stromatolites are large, often dome shaped, colonies of micro-organisms. They exist today in only a few locations (the best known being Shark Bay, Australia), but prior to 1 billion years ago they were widespread on our planet. They can be fossilized because they include substantial amounts of silic... Click here for more.
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If we started simple biological communities on Mars (ones that require very little to survive), would they start to evolve? Earth has the sun and other properties that have caused it to evolve. Did it evolve because it needed to for life? Maybe by adding life to Mars it will cause some polarity to other properties (needed for life) that would start an evolution on Mars. |
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Your question mixes two different senses of the word "evolve". As applied to a planet, evolution means a wide range of geological and geochemical processes, including cooling of the interior, volcanism, plate tectonics and changes in the composition of air and oceans. In biology, however, evolution ... Click here for more.
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