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#12
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Scott Hedrick wrote: "Name Withheld" wrote in message ... You are basing your opinion, as far as I can tell, on what you "think". I can't imagine a better thing for any person to base their opinions on. There are people who seriously think the world is flat. No, its not really flat, there are mountains and all kinds of bumps and holes. Alain Fournier |
#14
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There are people who seriously think the world is flat.
No, its not really flat, there are mountains and all kinds of bumps and holes. Are you guys going to make me bring up the canonical paper on flatness? http://www.improb.com/airchives/pape...i3/kansas.html |
#15
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Name Withheld wrote:
You are basing your opinion, as far as I can tell, on what you "think". I can't imagine a better thing for any person to base their opinions on. How about "fact"? |
#16
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Jim Kingdon wrote: There are people who seriously think the world is flat. No, its not really flat, there are mountains and all kinds of bumps and holes. Are you guys going to make me bring up the canonical paper on flatness? http://www.improb.com/airchives/pape...i3/kansas.html Do you have proof that Kansas really exists? Alain Fournier |
#17
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(AA Institute) wrote in message . com...
So you're saying bring in a small number of asteroids, one at a time, then somehow use them as rocket fuel to build up toward a bigger object? I don't understand this idea, please explain. Exactly. This is based on the premises: 1. A mission can be launched from High Earth Orbit that can bring back some 50 times its own mass in NEO material. 2. This material can be converted into larger retrieval missions, and a critical element of this is the ability to manufacture solar panels. 3. That the population of smaller NEOs is much higher than that of large NEOs, and some can be brought back (to HEO) with a delta V of a few 100 m/s. In more detail, something I did a few years back: http://www.geocities.com/alexterrell.../Routemap4.doc or via the intro if the above link doesn't work: http://www.geocities.com/alexterrell/Space_Profits.html Alex |
#18
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Micky wrote:
I disagree. If you are going to be travelling on a one way trip. And totally independant posibly not returning to earth in hundreds of years I think you do..... More mass means more energy to get to useful speeds, or lower speeds, with more cosmic ray exposure. (at least on the outside of this thing). Does it really have to have interior radiation levels lower than is typical at sea level on Earth, where humans have survived for 'hundreds' of years quite well? You will not, after all, be passing near espically nasty sources like flare stars or black holes... -- You know what to remove, to reply.... |
#19
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Does it really have to have interior radiation levels lower than is
typical at sea level on Earth, where humans have survived for 'hundreds' of years quite well? Actually, human communities have lived for "centuries" at approx. 5000m in the Andes and Himalayas, where cosmic rems are even higher. So that may be an acceptable baseline for deep-space travel. |
#20
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AA Institute wrote:
h (Rand Simberg) wrote in message . .. On Thu, 21 Oct 2004 14:10:17 -0500, in a place far, far away, "Name Withheld" made the phosphor on my monitor glow in such a way as to indicate that: You are basing your opinion, as far as I can tell, on what you "think". I can't imagine a better thing for any person to base their opinions on. How about what people who know what they're talking about think? Yeah like: 12th century AD, the Earth is at the centre of the universe. 15th century AD... ooops! No, revision time, the Sun is at the centre of the universe. That is the ART of science... And those who 'thought' differently had something to base those opinions on. Observations of distant ship masts disappearing below the horizon, rather than into a distant one, as would be expected on a flat Earth, the circular shadow Earth casts on the Moon during Lunar eclipses, etc. Gut feelings (which is where flat Earth notions really come from) have their place, but sooner or later, they must be backed up by something.... -- You know what to remove, to reply.... |
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