How many airplanes are in the US airspace at 10 am.?
832360
A common question?  Why do you want to know that?
1154193
Air Canada, Korean Air, Air Tran, Lufthansa, Alaska Airlines, Mesa, America West, Midwest, American, Northwest, Spirit, ATA, Sun Country, British Airways, TACA, Continental, United, US AIrways and Frontier. There's no way I am typing the routes every single one of those airlines flies.
724152
Airplanes depend on air for their lift. The atmosphere ends well short of the moon.
115462
Time for you to get a watch.  \nIts 10:33 pm here in Sac California USA
378732
how about the airlines?\n\n911 was the perfect example.\n\n2 planes leaving Boston 30Min's apart going to the same LA airport and both plans had a half a load.
477765
how many are there today of what???  4? 11? what are you talking about...
987274
Yea, tomorrow at 10am est.
601128
9 Nonuplet\n10 Decuplet\n12 Dodecuplet
860965
of course you can. but the air traffic control guys are trying to keep them as far away as they can. ususlly in landing and take off you can see othe planes near by doing their final approach or trying to establish their cours.\non the other hand if you live near an airport you can see that there are specific paths according the waether that all planes follow in order to land or take off. sometime they form a line one brhind the other always in safe and large distance.\n\nnow the sky is defined mostly by volume and not area as roads do. there is too much space to "push tin"..\nnonehteless there are certain areas in the world where air traffic is huge especailly during holidays.
644135
Between 10 p.m. to 12 in night.
17166
Here is a list I found:\n\nFive, A340-300 wide bodied long-haul aircraft; Four, A330-200 wide bodied medium/long-haul aircraft, and five A320-200 narrow bodied short-haul aircraft.
241090
it is the period of flying hour times used betwen aircraft servicing. think of it like a car having a 60000 mile service.
1076827
4:00\n\nEST = CST + 1 hour
628659
Less than 34 and more than 3.  Here is a link to a copy of NASAs current shuttle flight Manifest.  It is somewhat hard to tell which flights are bringing modules and other pieces of permanent hardware to the the ISS, but it looks like at least 10 flights are. \n\nhttp://www.thespaceplace.com/shuttle/future.html
593212
10pm in california. -last I heard.
236280
many flyers, and radio stations...
969966
There are more than 800 active satellites currently in orbit. They represent four percent of the total number of objects currently cataloged by the U.S. space surveillance network; the rest includes abandoned satellites, spent rocket boosters, and other debris.