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- From: jdnicoll@prism.ccs.uwo.ca (James Davis Nicoll)
- Subject: Re: averting doom
- Organization: University of Western Ontario, London
- Date: Thu, 31 Dec 1992 16:52:33 GMT
- Message-ID: <1992Dec31.165233.9008@julian.uwo.ca>
- References: <JMC.92Dec29211051@SAIL.Stanford.EDU> <1hua4mINN64f@shelley.u.washington.edu>
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- In article <1hua4mINN64f@shelley.u.washington.edu> lamontg@stein.u.washington.edu (Lamont Granquist) writes:
- >Hmmmm... In my ASTR class, we did a rough calculation that showed that the
- >radius of the Sun would be quite a bit over one AU after it hits the
- >giant branch. If correct, I don't see how mirrors would help us out. Also,
- >according to the ASTR class, the Sun isn't going to explode -- it won't be
- >hot enough to fuse silicon, and instead it will shed it outer envelope and
- >turn into a white dwarf.
-
- Hmmm. Anyone know how long it takes a planet orbiting in the
- outer fringes of a red giant to evaporate. Granted, red giants are
- toasty (By Canadian standards), but wouldn't the plasma at 1 AU
- be pretty thin? How fast would heat/momentum be transfered?
-
- James Nicoll
-