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Steve Campbell wrote in message ...
Been a long time since I have been here folks, too many zetafreaks, but the other morning I witnesse something so odd that I had to come here in the hope of finding out what it was. It was around 6am(GMT) on Wednesday morning of this week. Was looking south east and having a cigarette, when myself and a cow orker both seen the same thing..... What we observed was, essentially, a meteor. It moved vertically downward from our perspective, moving through aroung 25 degrees of arc on the sky, vanishing about 30 degrees from the horizon, and was as bright as the brightest star in the sky at the time ( venus?). What was odd ( and what propmpted a lot of "did you see that too????")was that it was a point source of light, not even the merest hint of a trail or afterglow of any kind whatsoever. it looked more than anything like a satellite passing over, but speeded up 1000 fold. The only thing that comes to mind at all ( and this will probably get me laughed out of here) is that maybe the recent solar activity was having some effect on the outer atmosphere that prevent the formation of the trail ( it's mainly ionized gass isn't it?), though I am not sure the effects had reached us by that time. Does anyone have any ideas at all as to what may have been going on, because we ) myself and the other witness) are bother starting to think we may be insane ![]() I hope that you could estimate its impact point- what if it was a lump of gold? Trails are the burning up of the meteor, but if it were inert?? Chemical compound most prevelent (IIRC) is nickel, but why not another heavy element? Compare positions of gold fields, add in geological history (formation of mountains, erosion, continental drift etc)- and see if the pattern in some cases doesn't hint at the gold being of meteoric origin........... Jim G |
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Jim Greenfield wrote:
I hope that you could estimate its impact point- what if it was a lump of gold? Trails are the burning up of the meteor, but if it were inert?? Chemical compound most prevelent (IIRC) is nickel, but why not another heavy element? Compare positions of gold fields, add in geological history (formation of mountains, erosion, continental drift etc)- and see if the pattern in some cases doesn't hint at the gold being of meteoric origin........... welllllll, two things really. First, it never made the ground, it vanished when still several degrees above the horizon. Secondly, as well as the burning up of the object the trail of a meteor is also made up of atmospheric gas that has been ionised by the violence of the object's passage. |
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![]() "Steve Campbell" First, it never made the ground, it vanished when still several degrees above the horizon. Secondly, as well as the burning up of the object the trail of a meteor is also made up of atmospheric gas that has been ionised by the violence of the object's passage. Actually, just because a meteor is no longer visible does not mean it has not carried on. When a major fireball enters the atmosphere its velocity is retarded to a point where ablation stops. This can occur when the meteoroid is slowed to around 2 to 5 km/second. When ablation stops the meteoroid is no longer visible but it has entered the so called "dark" portion of the flight path. This can occur at any altitude below 30 kms but it is more often in the 10-15 km height range. The lowest altitude for a photographically recorded fireball is 13 kms according to Dr. Jiri Borovicka of Ondrejov Observatory. This refers to large fireball meteoroids not the more normal bright cometary meteors observed mostly during annual meteor showers like the Perseids, Geminids or Leonids etc. These are high velocity meteors and they burn up high in the atmosphere with no chance of reaching the ground as a meteorite. Ed Majden EMO Sandia Bolide Detection Station Courtenay, B.C. Canada |
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Steve Campbell wrote in message ...
Jim Greenfield wrote: I hope that you could estimate its impact point- what if it was a lump of gold? Trails are the burning up of the meteor, but if it were inert?? Chemical compound most prevelent (IIRC) is nickel, but why not another heavy element? Compare positions of gold fields, add in geological history (formation of mountains, erosion, continental drift etc)- and see if the pattern in some cases doesn't hint at the gold being of meteoric origin........... welllllll, two things really. First, it never made the ground, it vanished when still several degrees above the horizon. Secondly, as well as the burning up of the object the trail of a meteor is also made up of atmospheric gas that has been ionised by the violence of the object's passage. Well if the trail is (partly) our atmosphere glowing, I guess there goes the pot of gold (sigh). Are you sure that the meteor wasn't obscured by a rainbow? Jim G |
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Jim Greenfield wrote:
Well if the trail is (partly) our atmosphere glowing, I guess there goes the pot of gold (sigh). Are you sure that the meteor wasn't obscured by a rainbow? 'Fraid so and even though I'm in ireland.....there was no little chap playin a fiddle around either ![]() |
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