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How come we haven't traveled to other stars yet? We could have done it with project orion and now we have to use useless chemical rockets. |
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I can’t see why we would want to go to the stars if the trip requires tens of thousands of years. Also, I disagree with your characterization of Project Orion as a way to get to the stars. Orion was a 50-years-old concept to use multiple nuclear explosions as a propulsion device Click here for more.
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I hear that one of the main reasons we haven't been sending people to Mars is that the cosmic radiation poses a great threat to the health of people. How could there of been a moon landing if there is too much radiation out there? how did they protect themselves against it if they didn't even know about it? |
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You are correct that long exposure to the energetic charged particles in space (often called “radiation” or “cosmic radiation”) is bad for your health. This fact was discovered in 1958 by the very first US space satellite http://en.wiki... Click here for more.
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I'm doing a websearch to try to figure out what "bioceramic" means. It's listed as part of the construction on a juicer, and claims it helps the juice stay fresher longer. You've come the closest to answering my question, so far. Actually, the question was just as helpful, perhaps I should buy stock in this latest fad. But I wish you would explain your thoughts more in debth instead of just scoffing. Now I have to look up far infrared heat, find the link to bioceramics. I guess you gave me some more word choices for my search. Health benefits bioceramics, infrared heat bioceramics?
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Good luck with your search. Please remember that the term "bioceramic" is used with two entirely different meanings. The scientific and medical meaning is ceramic materials designed to be used in surgical implants (such a hip replacements), because they are strong and are not rejected by the body. H... Click here for more.
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Was streptococcus actually found in Surveyor 3 after spending 2 and a half years on the Moon or is that just a rumor?
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Yes, this microbe was found on the Surveyor 3 camera that was retrieved and returned to Earth by the Apollo 12 astronauts. For many years it was thought that these microbes had survived their long exposure on the lunar surface. More recently, however, scientific opinion has shifted, and now we think... Click here for more.
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How efficient do you think are our methods of receiving radio-signals are-for possible detection of extra-terrestrial life?
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The sensitivity of radio receivers and signal-processing systems have been rapidly advancing, pretty closely following Moore's Law, doubling approximately every 18-24 months. Today, various SETI systems have the capability to detect beacon-type signals to distances of several hundred light years, bu... Click here for more.
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For exploring the outer planets, are Solar Sails, Ion Drives or Attomic propulsion systems likely to become a practical reality in the near future? |
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Solar sails depend on the pressure of sunlight, so they are not very useful for missions to the outer solar system, and neither is solar electric propulsion for the same reason. When travelling so far from the Sun, it is best to carry one's own power source. The most likely advanced propulsion is li... Click here for more.
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Who was the first woman on the moon? |
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Unfortunately no woman has visited the Moon. At the time of Apollo (1969-72), there were no women in the U.S. astronaut corps. The 12 astronauts who walked on the Moon were Buzz Aldrin, Neil Armstrong, Alan Bean, Gene Cernan, Pete Conrad, Moss Duke, James Irwin, Stuart Roosa, Jack Schmidt, Dave Scot... Click here for more.
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ected Sir/madam, Can u pls tell why NASA had stopped the Moon Mission after 1972?? |
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The Apollo Moon program was stopped by the U.S. Congress after the Apollo 17 mission. NASA'a total budget was cut and the remaining program of human flights was redirected toward the less expensive Apollo-Soyuz joint flight with the USSR, the three Skylab missions (the first space station), and even... Click here for more.
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If a moon base were to be built, what would it use as a source of oxygen and water? |
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Initially, astronauts will take all their supplies from the Earth, as they do now. By recycling as much as possible they will use these supples efficiently, but it is still terribly expensive to supply a lunar base with consumables carried all the way from the Earth. That is why the search for ice n... Click here for more.
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Hi I live in the UK and my dream is to work for nasa when i'm older anyway to the question i was wondering do astronauts have to pay for their spacesuits that they wear in orbit? thanks |
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No they don't, and a good thing it is too, at a price of more than $1 million per space suit!
David Morrison
NAI Senior Scientist
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