NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Airliner and re-entering space debris
From: Frank Reed CT
Date: 2007 Mar 28, 20:35 -0700
From: Frank Reed CT
Date: 2007 Mar 28, 20:35 -0700
Not much navigation in this, but what the hell. >From various news media, all happily quoting each other: "Space debris from a re-entering Russian satellite passed fairly close to an airliner [over the South Pacific]. " Since I know people from this list follow such stories, I just want to be the first to say "baloney" on this one. I'll bet you money that this is just some goofy pilot who saw a bright fireball (more likely than not, a fireball due to a natural meteor) and made the assumption that it must be "really close", just five miles away, because it "looks like" it's five miles away. But [as we on this list all know] there is no easy way to estimate a distance like that with an object of unknown size. The pilot probably read a notice about an upcoming Progress re-entry and when he saw something in the sky, he put two and two together and got 3.14159. As for the claim that he heard the sound of it, this is a frequent component of amateur reports of fireballs, and with rare exceptions, it's all in the observer's head. Finally, the "flaming" portion of a re-entry (more correctly the "plasma trail" portion) occurs at very high altitude and way down range (dozens to hundreds or miles typically) from the eventual landing point of any debris (an exception would be a very large, complex object like Mir or the ill-fated Columbia which breaks up into thousands of substantial piece during re-entry --in that case, the plasma trail from the most massive objects may extend as far down-range as the initial impact points of the smaller pieces). Better evidence could convince me otherwise, of course, but this story has such a "ufo tales" quality about it that I really would bet against it. Whenever someone says, "it looked like it was just on the other side of that hill", odds are very good that they have no idea what they're talking about. -FER --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to NavList@fer3.com To , send email to NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---