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On 4/19/2012 6:05 AM, Vaughn wrote:
On 4/19/2012 5:15 AM, bob haller wrote: because the robot can go places the human cant, costs a fractin of the cost of a human, cuts dramatically the costs of a entire mission. when the robot fails no one mourns the loss of life. science return is less but the program can contiinue operating near forever. Which can greatly increase the science gain over the human mission which will be weeks at most. beyond which the robot can be sterilized to prevent contamination.... Part of the reason the robot mission is so cheap is that there is no need to return the robot to earth. (One-way human missions are physically possible, but culturally impossible.) This also neatly solves any (albeit remote) concern of bringing some plague back to earth. You looked around you lately? We could use a good plague or two. -- http://tvmoviesforfree.com for free movies and Nostalgic TV. Tons of Military shows and programs. |
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On 4/19/2012 8:53 AM, Daryl wrote:
On 4/19/2012 6:05 AM, Vaughn wrote: On 4/19/2012 5:15 AM, bob haller wrote: beyond which the robot can be sterilized to prevent contamination.... Part of the reason the robot mission is so cheap is that there is no need to return the robot to earth. (One-way human missions are physically possible, but culturally impossible.) This also neatly solves any (albeit remote) concern of bringing some plague back to earth. You looked around you lately? We could use a good plague or two. Are you volunteering? Paul |
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On 4/19/2012 9:00 AM, Paul F Austin wrote:
On 4/19/2012 8:53 AM, Daryl wrote: On 4/19/2012 6:05 AM, Vaughn wrote: On 4/19/2012 5:15 AM, bob haller wrote: beyond which the robot can be sterilized to prevent contamination.... Part of the reason the robot mission is so cheap is that there is no need to return the robot to earth. (One-way human missions are physically possible, but culturally impossible.) This also neatly solves any (albeit remote) concern of bringing some plague back to earth. You looked around you lately? We could use a good plague or two. Are you volunteering? Paul I have been called many things but a Plague, never. -- http://tvmoviesforfree.com for free movies and Nostalgic TV. Tons of Military shows and programs. |
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On 4/19/2012 9:15 AM, Jeff Findley wrote:
Only in some ways. Note that manned lunar missions returned *far* more lunar samples to earth bound labs than unmanned lunar missions ever did (i.e. the Soviet Union did an unmanned sample return from the moon). True. Also note that when the US manned lunar program stopped, pretty much all unmanned missions stopped as well. It wasn't until decades later that new lunar orbiting missions were funded. Your point? But not returning to earth means no samples for earth bound labs. True, but returning a capsule of samples to earth, (difficult as it may be) is far simpler that returning an entire spaceship complete with human life support back to earth. With rovers, samples could be intelligently collected over a long period of time, and from a wide area. Our Mars rovers found many wonders over their years of operation that scientists would love to lay hands on. Note that earth bound labs will *always* be far better equipped than the pitiful subset of instruments that will fit on an unmanned (or even manned) probe. No doubt. Also note that a manned mission is necessarily a sample return mission, Agreed. unless the crew is expandable, which isn't going to happen. It's politically unacceptable to plan on having an expendable crew. I already made that point, only my words were "culturally impossible". Vaughn |
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On 4/20/2012 12:34 AM, JF Mezei wrote:
bob haller wrote: when the robot fails no one mourns the loss of life. But when there are humans, they can often fix problems or get around them to continue the mission. True, but sometimes it is cheaper to accept the loss than it would be to provide life support for a human. This would be especially true for interplanetary missions. Dan, U.S. Air Force, retired |
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#19
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On Apr 20, 9:55*am, Jeff Findley wrote:
In article , says... On 4/19/2012 9:15 AM, Jeff Findley wrote: Also note that when the US manned lunar program stopped, pretty much all unmanned missions stopped as well. *It wasn't until decades later that new lunar orbiting missions were funded. Your point? Preparation for manned lunar landings was the primary driver for US unmanned lunar missions. *Once the manned missions stopped, the unmanned missions did as well. No Buck Rogers, no bucks. Jeff -- " Ares 1 is a prime example of the fact that NASA just can't get it * up anymore... and when they can, it doesn't stay up long. ![]() * *- tinker I don't necessarily think unmanned moon missions stopped because manned ones did. They stopped because NASA was diverting resources to the shuttle outer planets exploration programs. Only so much money was available and at the time NASA seemed to think they had worn out moon exploration. |
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"Dean" wrote in message
... On Apr 20, 9:55 am, Jeff Findley wrote: In article , says... On 4/19/2012 9:15 AM, Jeff Findley wrote: Also note that when the US manned lunar program stopped, pretty much all unmanned missions stopped as well. It wasn't until decades later that new lunar orbiting missions were funded. Your point? Preparation for manned lunar landings was the primary driver for US unmanned lunar missions. Once the manned missions stopped, the unmanned missions did as well. No Buck Rogers, no bucks. Jeff -- " Ares 1 is a prime example of the fact that NASA just can't get it up anymore... and when they can, it doesn't stay up long. ![]() - tinker I don't necessarily think unmanned moon missions stopped because manned ones did. They stopped because NASA was diverting resources to the shuttle outer planets exploration programs. Only so much money was available and at the time NASA seemed to think they had worn out moon exploration. The unmanned lunar missions pretty much had one purpose, "survey the moon so we can safely land". Note that in fact all the US ones stopped prior to the first manned landing, since they had collected the necessary data. And even then, cuts in the manned program impact the outer planets missions. Consider the original Grand Tour missions and others were planning on using Saturn Vs from the second batch that was never ordered. What we got was a scaled down mission. No Bucks Rogers, No bucks. -- Greg D. Moore http://greenmountainsoftware.wordpress.com/ CEO QuiCR: Quick, Crowdsourced Responses. http://www.quicr.net |
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