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- From: higgins@fnalf.fnal.gov (Bill Higgins-- Beam Jockey)
- Newsgroups: sci.astro,sci.space
- Subject: No, only a reactor (was Re: Nuclear explosion in space?)
- Followup-To: sci.space
- Date: 27 Jan 93 21:25:19 -0600
- Organization: Fermi National Accelerator Laboratory
- Lines: 74
- Message-ID: <1993Jan27.212519.1@fnalf.fnal.gov>
- References: <oZRsXB4w165w@ersys.edmonton.ab.ca> <1993Jan27.070005.13031@mr.med.ge.com> <1993Jan27.135617.23601@nntpd2.cxo.dec.com>
- NNTP-Posting-Host: fnalf.fnal.gov
- Summary: SDIO plans to fly reactor; astronomers unhappy
- Keywords: nuclear reactor explosion Topaz SDIO GRO
-
- In article <1993Jan27.135617.23601@nntpd2.cxo.dec.com>, fretts@willee.enet.dec.com (Carole Fretts) writes:
- >
- > I'm not sure that this is the right forum for my question, but I need to
- > ask this. Has anyone else heard a news report that the U.S. is planning
- > on detonating a nuclear device in space? I heard it this weekend on
- > a Boston morning radio news broadcast but cannot track it down for any
- > further information.
-
- No! This is forbidden by the Test Ban Treaty of 1963. What you
- heard, as astronomer David Palmer has pointed out on sci.astro,
- was probably an account of the planned flight of a small nuclear
- reactor.
-
- The Strategic Defense Initiative Organization (SDIO), which does
- research into space-based antimissile defenses among other things, has
- purchased a "Topaz" space reactor from Russia(!). The Russian
- military space program has operated reactors in space for a couple of
- decades. One, you, may recall, Kosmos 954, came crashing down on
- Canada in 1978, spreading radioactive material over a wide area.
-
- Reactors are quite safe, only mildly radioactive, until you turn them
- on. After that they begin to accumulate "fission products" with
- unpleasant amounts of radioactivity. The safe way to operate a space
- reactor is to launch it into a high orbit. Only when you're sure it
- is in an orbit that has negligible chance of decaying do you start it
- up. I would presume that this is SDIO's plan for Topaz, but don't take my
- word for it.
-
- The Topaz will power an experimental electric propulsion system.
- Nuclear reactors are promising for space missions beyond the Earth,
- especially beyond Mars where sunlight is weak and solar power is no
- longer viable. They are also a good power supply for electric
- propulsion, which in my opinion is way overdue for flight testing.
-
- Controversy has erupted because the radiation the reactor gives off
- interferes with astrophysics satellites, such as the Compton Gamma Ray
- Observatory, which are trying to detect faint amounts of radiation
- from distant stars and galaxies. The American Astronomical Society
- has protested the plans for Topaz and SDIO is trying to work out a
- compromise. They want to fly it in an orbit 1600 kilometers high, and
- some astronomers would rather it be at least 6000 km high.
-
- See *Space News*, January 18-24 1993, p. 17. The *New York Times*
- also ran an article in a Tuesday "Science Times" section recently, but
- I didn't record the date in my photocopy. January 5, perhaps? Maybe
- before Christmas. Look for the headline "Space Test of Reactor Is
- Opposed."
-
- > What I caught was that a planned nuclear detonation
- > in space was being postponed for a few months to make sure that no
- > satellites are damaged in the explosion.
-
- This sounds like a distorted version of the AAS controversy. Possibly
- the story you heard means somebody has made a definite decision on
- this.
-
- > I would really appreciate hearing from anyone who knows anything about
- > this. Also, if you have the names of government agencies I could contact
- > to confirm this, that would also be appreciated.
-
- SDIO would confirm it for you. Best I can tell from this here
- directory, their Public Affairs Policy Division is (703)695-8743.
- Opponents of the program include Steven Aftergood of the Federation of
- American Scientists in Washington and Prof. Donald Lamb of the
- University of Chicago.
-
- --
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