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Originally posted by Lastone
Have you ...?? lol That's not an answer that's an opinion.
Watch the F... video at minut 1.11 to 1.14 then talk about it.
About the chopper video... minut 1.14 was taken from what ... a balloon ??
Global one chopper. Night watch.
Originally posted by Lastone
l... because you're wrong about it.
Originally posted by Lastone
Yes a meteor does brake in earth atmosfere but not just before impact.
Originally posted by Lastone
"although significantly brighter than I have ever seen". When was it brighter?
Originally posted by Lastone
What I'm saying is...that wasn't a meteor.
Originally posted by Lastone
lastlinkontheleft.com...
en.wikipedia.org...
www.globaltv.com...
1. Fireball brightness is not a valid predictor of probability of meteorite production. The Halliday study found that, perhaps surprisingly, meteorites resulted from fireballs at least as faint as -6 apparent magnitude, and a typical meteorite producing fireball is only -9 magnitude. Many of the brightest and most spectacular fireballs did not produce meteorites.
Originally posted by Lastone
reply to post by C.H.U.D.
Quote:
"Show me some evidence that it was not a meteor... "
Endquote
Meteors do not have brakes....... remember !! I did agree with you on that one.
Originally posted by Phage
Not really. Those three reports occurred over four days, over an area of over 1,000,000 square miles.
"Several thousand meteors of fireball magnitude occur in the Earth's atmosphere each day. or so. "
www.amsmeteors.org
Rocks that survive to become meteorites are much stronger than the rocks in cometary meteor showers that are seen to fragment at very high altitudes. Meteorite producing meteors are seen to penetrate deep into the atmosphere and decelerate, while most cometary meteors disintegrate at high altitude and low dynamic ram pressure without slowing down. Atmospheric entry is a barrier, a filter, that prevents typical cometary sized meteors from surviving...
Abstract We present an analysis of sporadic meteor number 07406018, observed by image intensified video cameras at two stations, which showed a pronounced deceleration along its trajectory.
Whether they pulverize or survive depends on the density and consistency of the material from which they are made, and their angle of entrance in the atmosphere. Once decelerated, the fragments cease being incandescent and go into free fall crossing the stratosphere and they are cooling progressively until arriving at the ground. That part of their fall is completely invisible for us from the ground since melting and evaporation ('ablation') of the outer surface does not longer take place: this phase of the fall is called dark flight.
By way of contrast, meteors which are traveling fast enough to appear to glow do not dim to the point of being "not bright" and then brighten again. This is because, as Klass correctly points out, what causes the light is the high velocity of the meteor passing through atmosphere.
The meteor is traveling so fast that it "instantaneously" heats the air as it passes through. (Note: Klass gives a meteor speed as 10,000 mph or 2.8 mi/sec. However, this is lower than that of any body entering the Earth's atmosphere from space. Free fall to the earth from a great distance would produce a speed of about 7 mi/sec at the earth's surface in the absence of atmosphere. Orbital speed, which is lower than meteoric speed but still large enough to cause a plasma in the upper atmosphere, is about 5 mi/sec.)
This heating is a very rapid process caused by the meteor compressing the air ahead of it and raising the temperature (kinetic energy of the air molecules) to the point where the air becomes ionized (a plasma). In returning to the un-ionized state (free electrons reuniting with the atoms/molecules) the atoms/molecules give off light which appears to envelop the meteor (one does not see the meteor itself, but rather the envelope of heated air).
The natural tendency of a meteor is to slow down as it meets with resistance while forcing itself at high speed through the atmosphere. If it slows to a speed low enough so that it no longer creates a plasma it will become dark (not giving off light) and will not again appear bright since there is no way for it to regain its lost speed. At the high altitudes of meteors (50 miles and up) the atmosphere is quite thin and easily heated to the plasma state by the speed of the meteor.
Furthermore the air resistance is quite low, so the meteor can travel a great distance before being slowed to "sub-plasma" speed. However, as the altitude decreases the atmospheric density increases and it takes ever more energy from the meteor to maintain a glowing plasma.
It is doubtful that any meteor would be still glowing at an altitude of 10,000 ft, but if it were, it would be quite large and eventually slowed to the point of hitting the Earth.
The suggestion that one.. or several... meteors could travel many miles horizontally at a speed high enough to glow while at an altitude below 10,000 ft is not supported by any known physics of meteors.
Originally posted by riggs2099
reply to post by Lastone
There's always sucker in every group.. It is and was a meteor, to believe otherwise just shows how uneducated you are...you are definitly reading too much into something natural. And they wander why skeptics find it hard to believe people....You my friend are living in the dark ages...where they believed that falling stars are signs from the gods...
[edit on 22-11-2008 by riggs2099]