Atmosphere of Earth

The atmosphere of Earth is the layer of gases surrounding the planet Earth that is retained by Earth's gravity. The atmosphere protects life on Earth by absorbing ultraviolet solar radiation, warming the surface through heat retention (greenhouse effect), and reducing temperature extremes between day and night (the diurnal temperature variation).

The common name air (English pronunciation: /ɛər/) is given to the atmospheric gases used in breathing and photosynthesis. By volume, dry air contains 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.039% carbon dioxide, and small amounts of other gases. Air also contains a variable amount of water vapor, on average around 1% at sea level, and 0.4% over the entire atmosphere. Air content and atmospheric pressure vary at different layers, and air suitable for the survival of terrestrial plants and terrestrial animals is found only in Earth's troposphere and artificial atmospheres.

The atmosphere has a mass of about 5.15×10¹⁸ kg, three quarters of which is within about 11 km (6.8 mi; 36,000 ft) of the surface. The atmosphere becomes thinner and thinner with increasing altitude, with no definite boundary between the atmosphere and outer space. The Kármán line, at 100 km (62 mi), or 1.57% of Earth's radius, is often used as the border between the atmosphere and outer space. Atmospheric effects become noticeable during atmospheric reentry of spacecraft at an altitude of around 120 km (75 mi). Several layers can be distinguished in the atmosphere, based on characteristics such as temperature and composition.

Last Dance

Last Dance may refer to:

In music:

In film and television:

See also

Air (disambiguation)

Air is the name given to the Earth's atmosphere.

Air may also refer to:

Music

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Artists

Yokohama Arena

Yokohama Arena (横浜アリーナ, Yokohama Arīna) is an indoor arena located in Yokohama, Japan. The capacity of the arena is 17,000 and was opened in 1989. The arena was modeled after US sports venue Madison Square Garden in New York City. It is a five-minute walk from the closest subway station, Shin-Yokohama Station on the JR/Yokohama Municipal Subway.

As one of the largest concert venues in the Kantō region, it is a frequent location for artists to end their tours. The spacious stage allows for more complex set design and lighting, but the reasonable size makes it easier to sell out than the Tokyo Dome.

2011 Tōhoku Earthquake/Tsunami Relief

After the 2011 Tōhoku earthquake and resulting tsunami, Yokohama played host as an emergency shelter for those affected by the earthquake and tsunami. Citizens were allowed the stay the night, and were offered blankets and other amenities. Hideharu Terada, a Yokohama Arena official stated "There has never been a big earthquake like this. [...] People are trickling in. They are all calm."