The sun's photosphere is the innermost layer of the sun that we can observe directly. This low density makes the corona much less bright than the surface of the Sun. The temperature in the corona is 500,000 K (900,000 degrees F, 500,000 degrees C) or more, up to a few million K. One atmosphere, many layers. In the lower stratosphere, temperature stays almost constant. Heat is produced in the process of the formation of Ozone, and this heat is responsible for temperature increases, from an average -60F (-51C) at tropopause to a maximum of about 5F (-15C) at the top of the stratosphere. Related: How far is Earth from the sun? The Rights Holder for media is the person or group credited. These layers are the troposphere, stratosphere, mesosphere and thermosphere. Additional resources. When this happens, the moon blocks out the bright light of the Sun. The lower part of the exosphere includes low-Earth orbit, while medium-Earth orbit is higher in the atmosphere.The upper boundary of the exosphere is visible in satellite images of Earth. That makes it difficult to see without using special instruments. The air in the mesosphere is far too thin to breathe (the air pressure at the bottom of the layer is well below 1% of the pressure at sea level and continues dropping as you go higher). The atmosphere surrounds our planet like the peel of an orange. The photosphere is approximately 400 to 300 km thick. The stratosphere is the next layer up from Earths surface. We humans live in the troposphere, and nearly all weather occurs in this lowest layer. The temperature of the photosphere ranges from 11,000 degrees Fahrenheit (6,125 degrees Celsius) at the bottom to 7,460 F (4,125 C) at the top. Ions are created as powerful x-rays and UV rays knock electrons off atoms.The ionospherea layer of free electrons and ionsreflects radio waves. The exosphere is the very edge of our atmosphere. Earth's atmosphere is composed of about 78 percent nitrogen, 21 percent oxygen, 0.9 percent argon, and 0.1 percent other gases. The atmosphere is divided into five different layers, based on temperature. Their outer layers burn as they race through the mesosphere, but they are massive enough to fall through the lower atmosphere and crash to Earth as meteorites.The mesosphere is the least-understood part of Earths atmosphere. The most well-known feature associated with Earths lithosphere istectonic activity. Layers of the atmosphere: troposphere, stratosphere, mesosphere and thermosphere. Jet streams are extremely important to the airline industry. Atmospheric OrbitAlthough the International Space Station orbits in the thermosphere, most satellites orbit the Earth outside its atmosphere. It extends upward to a height of about 85 km (53 miles) above our planet. The atmosphere is so spread out that we barely notice it, yet its weight is equal to a layer of water more than 10 meters (34 feet) deep covering the entire planet. New research shows that the outermost layer of the atmosphere will lose 3 percent of its density over the coming decade, a sign of the far-reaching impacts of greenhouse gas emissions.

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