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From: friedman@uiucdcs.UUCP (friedman )
Newsgroups: net.sf-lovers
Subject: Re: Speed of light - (nf)
Message-ID: <4791@uiucdcs.UUCP>
Date: Fri, 6-Jan-84 22:27:19 EST
Article-I.D.: uiucdcs.4791
Posted: Fri Jan  6 22:27:19 1984
Date-Received: Sun, 8-Jan-84 01:02:54 EST
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#R:sri-arpa:-1500700:uiucdcs:12500061:000:596
uiucdcs!friedman    Jan  6 11:33:00 1984

Wait a minute.

The speed of light in a vacuum is a constant for all oberservers in all
frames of reference.

As for the amount of time we have to escape radiation from the center of
the galaxy:  I don't remember how far away we are from the center, and
therefore from that hypothetical black hole, but I'm under the impression
it's a lot further than 300 light years.  Even more fundamental, if there
is dangerous radiation from that kind of cosmic source, it is unlikely to
be different today, 300 years from today, or 30,000 years from today; all
of those are small times on the cosmic scale.