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airplanes fly at different altitudes in different airspaces (places around the country) and in all 4 different directions.
heres a simplified example.
going east there are appxly 10 different flight levels. lets say every other odd number from 21, 000 ft on up. 21, 25, 29, 33, 37, etc thousands of feet asl(above sea level).
going west there are appxly 10 different flight levels.
lets say every other odd number from 20,000 ft on up.
24, 28, 32, 36, etc thousands of feet asl.
going north there are appxly 10 different flight levels.
lets say every other odd number from 23,000 ft on up.
27,31, 35, 39, etc thousands of feet asl.
lastly , going south there are appxly 10 different flight levels.
lets say every other even number from 22,000 ft on up.
22, 26, 30, 34, 38, 3tc thousands of feet asl.
if you study this...you will see that minimum seperation is at least 1000 ft in any direction.
going in opposite directions ,flights are usually routed into air corridors to keep minimum seperation of at least several miles horizontal and at least 1000 ft vertical.
so, even with 5,000 plus commercial flights in the air at any one time over the whole usa...thats a pretty slim chance of intrusion into another aircrafts safety zone.
plus with the air controllers, pilots and computer avoidance equipment... the situation is sager than on the local freeways.
over the whole usa
blessings,
dr james
retired cfo, pilot and air surgeon
ex]
[edit on 5-2-2010 by esteay812]
Originally posted by esteay812
I have wondered why so many people claim to have seen UFO's and at the same time the amount of people who have never seen one in the skies is nearly everyone. Are all these people that have viewed them deranged?
Originally posted by muzzleflash
How many astronomers get a shot of a passenger airplane while looking up into the cosmos? Around none of them, as I have never seen or heard of this type of incident occurring.
Lunar Transient Phenomena
January 23, 2007: If you stare at the Moon long enough, you start seeing things. "82 things to be exact," says Bill Cooke, leader of NASA's Meteoroid Environment Group. That's how many "transient phenomena" the group has video-taped since they started monitoring the night side of the Moon in Nov. 2005.
In 107 hours of observing, we've tallied 20 lunar meteors + at least 60 Earth-orbiting satellites + one airplane + one terrestrial meteor = 82 in all.
Originally posted by jinx880101
Funny, I'm quite the hypocrite...I ridicule religious people for believing in a God they cannot see, when all the time I am hell bent on that aliens & UFO's exist...when all this time I have never seen one heard one smelt one or felt one!
Originally posted by esteay812
I have wondered why so many people claim to have seen UFO's and at the same time the amount of people who have never seen one in the skies is nearly everyone.