Date: Thu, 30 Jun 2005 19:58:17 -0400 (EDT)
From: "Keith F. Lynch" <kfl at KeithLynch.net>
To: WSFA members <WSFAlist at WSFA.org>
Subject: [WSFA] Happy Tunguska Day

97 years ago today there was a 20 megaton explosion over the Tunguska
region of Siberia.  Asteroid?  Comet?  Time-traveller with a nuke?
Anti-matter pebble?  Relativistic starship with defective brakes?
Could it happen again tomorrow, in our neighborhood?  Nobody knows.