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Earth's atmosphere is a layer of gases surrounding the planet Earth and retained by the Earth's gravity. It contains roughly 78% nitrogen and 21% oxygen, trace amounts of other gases, and water vapor. This mixture of gases is commonly known as air. The atmosphere protects life on Earth by absorbing ultraviolet solar radiation and reducing temperature extremes between day and night.
The atmosphere has no abrupt cut-off. It slowly becomes thinner and fades away into space. There is no definite boundary between the atmosphere and outer space. Three-quarters of the atmosphere's mass is within 11 km of the planetary surface. In the United States, persons who travel above an altitude of 50.0 miles (80.5 km) are designated as astronauts. An altitude of 120 km (75 mi or 400,000 ft) marks the boundary where atmospheric effects become noticeable during re-entry. The Karman line, at 100 km (62 mi), is also frequently used as the boundary between atmosphere and space.
Temperature and the atmospheric layers
The temperature of the Earth's atmosphere varies with altitude; the mathematical relationship between temperature and altitude varies between the different atmospheric layers: More on [ Earth's atmosphere ]
Air :: Transportation
Airlines :: Travel
Aviation :: Transportation
rasanya saya ini takut air atau gimana..seharian belom mandi..(-.-!)
paradika (ryo paradika) Thu, 24 Dec 2009 08:56:24 -0000
rasanya saya ini takut air atau gimana..seharian belom mandi..(-.-!)
Want to see: hurt locker, up in the air, precious, and the broadway melody. Suggestions?
josiegorm (Josie Gormley) Thu, 24 Dec 2009 08:56:22 -0000
Want to see: hurt locker, up in the air, precious, and the broadway melody. Suggestions?
Halah tenggorokan gw sakit. Padahal gak minum air es.. Kampretos lah.
sarrdebb (Sarah Deby) Thu, 24 Dec 2009 08:56:13 -0000
Halah tenggorokan gw sakit. Padahal gak minum air es.. Kampretos lah.
35 Adobe AIR Tutorials for Web Developers http://kik.im/wv #air #web #develop
webmastergeek (Webmaster Geek) Thu, 24 Dec 2009 08:56:12 -0000
35 Adobe AIR Tutorials for Web Developers http://kik.im/wv #air #web #develop
AIR FORCE 1 LOW PREMIUM LEã¯ãµã¤ãºï¼ã§ãï¼RT @YUICHIYOSHIDA: Shuããæå¤ã«è¶³å°ãããã§ããï¼RT @kamishu14: ã¯ãªã¹ãã¹ãã¬ã¼ã³ãã§é«ãããªé´ãããã£ãï½âª http://tweetphoto.com/7082675
kamishu14 (SHUHEI KAMINAGA) Thu, 24 Dec 2009 08:56:09 -0000
AIR FORCE 1 LOW PREMIUM LEはサイズ９です！RT @YUICHIYOSHIDA: Shuさん意外に足小さいんですね！RT @kamishu14: クリスマスプレゼントで高そうな靴をもらった～♪ http://tweetphoto.com/7082675
RT @jimmymachan: If you want to download "off air" by fair verona head to triple j unearthed and search us!! Free download =D RT!!
carolinemessina (Caroline Messina) Thu, 24 Dec 2009 08:56:05 -0000
RT @jimmymachan: If you want to download "off air" by fair verona head to triple j unearthed and search us!! Free download =D RT!!
Found - US Locations - Lists baggage centers for some major airports, with FAQs about check-ins, parking facilities and procedures for handling claims for lost luggage.
Meta Description: [ Lost & Found information for major airports across the nation including San Diego International. Weather for your locale includes
Los Angeles O'Hare Oakland McCarran Portland ]
Airline Safety Records and Comparisons - Provides objective comparisons of the safety records of all large US airlines. Allows consumers to identify which airlines are safest.
Meta Description: [ Airline Safety Records and airline safety information for all major airlines ]
Airline Ticket Consolidators and Bucket Shops FAQ - Summary of travel tips from Edward Hasbrouck's The Practical Nomad.
Meta Description: [ Airline Ticket Consolidators and Bucket Shops FAQ ]
AirlineMeals.net - Collection of photographs of airline food.
Meta Description: [ Thousands of photos of airline menu trays from all over the world. ]
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Airlines Guide - Links to airline webpages, pictures, video clips, statistics, and related resources.
Meta Description: [ Airlines Guide - دليل الطيران ]
Airlines.ws - A directory of the world's airlines, complete with contact information.
Meta Description: [ Airlines , Airline news , contact, airline tickets ]
BumpTracker - Includes list of airlines with results of airline seating bumps. Includes bumping tips.
Epinions.com: Airlines - Advice and opinions written by consumers.
Meta Description: [ Epinions has the best comparison shopping information on Airlines. Compare prices from across the web and read reviews from other consumers on Airlines before you decide to buy. ]
FAA: Passengers - Frequently Requested Information - Find travel safety information and tips. Links to air travel problems and how to file a complaint, air travel consumer report, travel tips and publications, airline customer service plans, and service cessations.
International Aviation Safety Organization - Consumer watchdog group.
Just Planes - Airline information including videos, photos, and airline links.
Research Airline Quality - World airline surveys, quality rankings, reviews and allied air transport information.
Meta Description: [ Skytrax, airline forums, airline and airport Passenger Surveys, Skytrax airline standards rating, best airline surveys, Best Airports, passenger flight Reviews, star ranking ]
SeatGuru - Guide to passenger seating on many airlines including United, American, Delta, Continental, and US Airways. Drawings indicate good and bad seats, exit locations, and seat sizes.
Meta Description: [ Information on airline seats and in-flight amenities featuring the best seat, legroom, and recline information. ]
Star Alliance - Provides information about the benefits afforded to the member airlines' customers. Alliance formed by Air Canada, Lufthansa, SAS, United, and Thai, Singapore, Varig, Tyrolean, Mexicana, Lauda, British Midalnd, Ansett Australian, and Air New Zealand.
The Fare is Not Always Law - LLRX article describing how best to obtain a lower priced ticket.
Meta Description: [ The Fare Is Not Always Law: A Law Librarian’s Guide to Researching Airline Ticket Prices By Stephen Young ]
V-Flyer.com - Unofficial site offers information for Virgin Atlantic customers. Includes seat maps and ratings, aircraft schedules, galileo tools, travel tips, flight tracking, and discussion forum.
Meta Description: [ The largest independent resource for Virgin Atlantic passengers : The Virgin Atlantic, Virgin America and Virgin Blue Flyer Resouce. A huge collection of free travel tools and reference information for passengers of Richard Branson's famous group of airlines. ]
Veggie Flyer - Site has been set up for vegetarians to share information about experiences with airline meals and to campaign for equal treatment.
World Air Routes - Aviation travel videos allow users to virtually travel around the globe in the cockpit of many airlines and aircraft on the world air routes.
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World Airline Information - Contains information about international airlines, including fleet information, regions served, and contact information.
Meta Description: [ Website providing information about airports around the world. One stop source of information for world travelers ]
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