[meteorite-list] re: Mystery Surrounds Green Meteor in Australia
From: Marco Langbroek <marco.langbroek_at_meteoritecentral.com>
Date: Wed May 17 13:02:13 2006 Message-ID: <446B570D.7010509_at_wanadoo.nl> > Astronomers are uncertain whether the object was a piece of space junk > or a meteorite, however Jim Barclay from the Maidenwell Observatory > suspects it was part of a satellite or some rocket casing. > > "The description that I received from phone calls was that it was of a > greeny blue colour which typically suggests something metallic," Mr > Barclay said. > > "Over 20,000 pieces of space junk are currently hurtling around the > earth and they have to come back down. If this had landed on someone's > house though it could have killed someone," he said. I don't understand why space junk, rather than a meteoric fireball, is almost always being picked out as the most likely explanation by these observatory spokesmen whenever a bright fireball has been sighted. The point is that space junk decays are relatively rare compared to meteoric fireballs - so they are picking the least likely option. Moreover, these commenters do not seem to be aware that you can actually *check* whether something is a space junk decay or not. That stuff is being tracked! Virtually everything larger than a football in Low Earth Orbit has been catalogued. In this case there is no reason at all to consider a space junk decay, not in the observation itself (the colour argument is nonsense), nor when checking pertinent sources for space junk decays. - Marco ----- Dr Marco Langbroek Dutch Meteor Society (DMS) e-mail: meteorites_at_dmsweb.org private website http://home.wanadoo.nl/marco.langbroek DMS website http://www.dmsweb.org ----- Received on Wed 17 May 2006 01:02:05 PM PDT |
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