Our solar system consists of the sun, planets and other celestial bodies that circulate all around him like satellites, meteoroids, comets, and asteroids. The sun as the center of the solar system. The planets orbit around the sun in accordance with the so-called revolution. Orbit is a planet orbits around the sun. Field where the circulation of the planets is called the ecliptic plane. Kala revolution is the time required for a planet once had a revolution.
In addition to air-revolution, the planet is also to rotation. Rotation is the planet rotates on its axis. The time required for one rotation is called kala rotation.
The solar system consists of a star called the sun and all the objects that surround it.
SUN
The sun is the closest star to Earth at the center of the solar system.
The distance between the Earth and the Sun is 150 million kilometers or 1 SA.
Sun constituent substances in the form of gas, with the composition: hydrogen (75%), helium (20%), and other elements (2%).
The sun's surface temperature of 6000 degrees Celsius, and a core part reaches 15 million degrees Celsius.
The sun rotates 25.04 today and have a gravity of 27.9 times Earth's gravity.
Mass of the sun is 333,000 times the mass of Earth.
The sun is divided into 3 parts:
The sun's core. This happens at the nuclear reaction (conversion of hydrogen into helium and energy). The temperature reaches 15 million Kelvin.
Bola Sun / photosphere
Sun's atmosphere (consisting of the chromosphere and corona).
The sun skin layer is divided into three, namely:
Photosphere
Depth of 500 Km
Photosphere temperature of 6,000 Kelvin and 4,500 Kelvin reduced to the outer photosphere.
Chromosphere
Chromosphere layer towering 12,000 Km above the photosphere and has a thickness of about 2.400 Km.
Temperature of 10,000 Kelvin upper chromosphere.
Corona (the outer part of the Sun's atmosphere)
The temperature of the outer corona reaches 2 million Kelvin.
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