home *** CD-ROM | disk | FTP | other *** search
- Xref: sparky sci.space:19045 talk.politics.space:1688
- Newsgroups: sci.space,talk.politics.space
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!malgudi.oar.net!caen!sdd.hp.com!swrinde!cs.utexas.edu!bcm!aio!ecfa.jsc.nasa.gov!matthews
- From: matthews@ecfa.jsc.nasa.gov (Michael C. Matthews)
- Subject: Re: Justification for the Space Program
- Message-ID: <1993Jan8.215514.22336@aio.jsc.nasa.gov>
- Sender: news@aio.jsc.nasa.gov (USENET News System)
- Reply-To: matthews@ial7.jsc.nasa.gov
- Organization: NASA/JSC Engineering Computation Facility
- References: <1993Jan7.205156.13655@cs.rochester.edu> <jfelder-080193105134@latvia.lerc.nasa.gov> <1993Jan8.190043.24897@cs.rochester.edu>
- Distribution: usa
- Date: Fri, 8 Jan 1993 21:55:14 GMT
- Lines: 44
-
- In article <1993Jan8.190043.24897@cs.rochester.edu> dietz@cs.rochester.edu (Paul Dietz) writes:
- >In article <jfelder-080193105134@latvia.lerc.nasa.gov> jfelder@lerc.nasa.gov (James L. Felder) writes:
- >
- >>> is very hard to replace with some substitute. Fossil fuels are
- >>> an example -- there is no reason why we should not be able
- >>> to survive indefinitely without them, if some other source of
- >>> energy is available.
- >
- >> And no matter what we will have to learn to do without them. And will
- >> probably be cursed by future generations for burning such a useful
- >> commodity simply to heat our homes.
- >
- >Just like we curse the shortage of whale oil? Hardly -- they will
- >view fossil fuel use as a curious historical anomaly, and pity
- >us for being (so) relatively poor and ignorant that we could not
- >use cleaner alternatives.
-
- No, more like we curse the shortage of whales. :-)
-
- There are many useful things to do with petroleum products other
- than produce energy -- they are useful as lubricants and are needed
- for the production of plastics and other petrochemicals.
-
- >...
- >Powersats as usually described can't hack it as the primary energy
- >source for earth, since there's not enough room in GEO. They'd have
-
- What does this mean? Are you implying that powersats would be as restricted
- as comsats in "orbital slot" width? Why?
-
- >to be farther away. That drives up cost. I am also not convinced the
-
- There are reasons to think that a lunar surface-based solar power
- infrastructure could be considerably cheaper than GEO powersats, due to
- the lack of a requirement to develop a very large-scale lunar surface-
- to-GEO transportation infrastructure for delivery of lunar raw materials
- for powersat manufacture.
-
-
- --
- Mike Matthews, ex-Tether Dude +-------------> matthews@ial7.jsc.nasa.gov
- "Had the Shuttle on a String" \_ Now accepting NeXTMail via KlugeNet(TM)!
- Lockheed-ESC |
- Houston, TX | *** WILL HACK FOR FOOD ***
-