Posted by
Phoenix Lady on Friday, July 27, 2007 2:36:52 PM
...about how to solve a whole bunch of problems at one fell swoop. The following is a letter sent to the editor of Space News by Al Globus. He is the chair of the Space Settlement Advocacy Committee of the National Space Society (although this is his personal statement, not written on behalf of the committee).
Think about it, folks. The solution to any problem is always to be found at a higher level of logic than the problem itself. Albert Einstein knew that. Now you do, too.
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SSP: Let's Get Real
While I was very happy to see Jeremy Singer's July 23 article on
space solar power (SSP), I thought it was, well, timid. The numbers
cited, a few percent of US electrical power by 2050 and 10% by 2060
are a function of the effort expended and dates chosen, not anything
fundamental. With equal accuracy, he could, for example, have said
that by 2100 SSP could supply all U.S. power with zero greenhouse gas
emissions.
The important facts about SSP are:
1. Long term, it can supply not only all the power America needs,
but all the power the entire planet needs. In particular, every
single resident of planet Earth could enjoy the energy use now
reserved for the wealthy. While this sounds radical, it's actually
conservative. The total space solar power available is 2.3 billion
times the solar power available on Earth. Obviously, only a tiny
fraction need be gathered, which is fortunate since there are some
practical problems :-).
2. While there is some minimum time before SSP power is available,
probably a decade or two, the timing of power availability is a
function of the effort expended, which is currently pretty close to
zero.
3. While SSP can be built strictly from Earth, there are a lot of
advantages to using lunar (or asteroidal) materials. The energy cost
for launch is about five times less and the environmental cost of SSP
built from lunar materials is arguably the best of any power source
-- the only competition being ground based solar and wind, neither of
which is suitable for baseload power.
4. Unlike nuclear power, SSP is not an attractive terrorist target
and attacks on the space segment will be extremely difficult for non-
state actors to pull off for a very long time to come.
Clean, American controlled electrical power is far more important to
US interests than the ISS and Lunar exploration combined, yet these
receive billions of dollars per year and SSP gets one DOD official.
Looking further afield, the U.S. spends a couple of hundred billion
per year trying to control Persian Gulf oil, and is not doing very
well. With funding on this order SSP could be available very quickly
indeed, with no need for flag draped coffins.
All that is needed to replace oil for automobiles is better batteries
because electric cars are superior to internal combustion vehicles in
every way, except the gas tank, which is a simple, problem free means
to store a lot of energy. Fortunately, batteries have an enormous
market in cell phones, PDA, and laptops. If the physics allow, this
problem will be solved. Thus, in the time scales necessary to
product SSP, the energy could power our fleet of SUVs.
Right now NASA has marginal funding because it's doing marginal
things. Exploration and science are exciting, but not vital. Clean,
ample, American-controlled energy production is vital. SSP can
deliver it. The problems are primarily technical. We can solve
them. Let's stop dinking around and do it.
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The dinosaurs were destroyed by an asteroid because they weren't
space-faring. It's almost as if Gaia then thought "Well, dinosaurs
worked pretty well, but space-faring is necessary. Maybe I'll try
mammals this time." Humanity is now developing systems to detect and
deflect asteroids, and could build orbital space colonies to spread
beyond Earth to ensure life would survive a planetary catastrophe.
Al Globus
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As always, for more information about how YOU can help, check out
http://www.nss.org/.
Ad Astra per Levitas Nostra!
Theresa