Category: Sun

The Sun

The Sun is a huge ball of incandescent plasma at the center of our Solar System. It accounts for more than 99.86% of the mass of the Solar System, and provides all the energy we need for life here on Earth. Ancient civilizations, such as the Romans worshiped the Sun because they saw it as something that brought life. It was given various names such as Sol by the Romans and Helios by the Greeks. And perhaps that worship was reasonable, for without the Sun, life on Earth just wouldn’t be possible.

The Sun’s diameter is 1,392,000 kilometers or 865,000 miles; that’s 109 times the diameter of the Earth. You could fit 1.3 million planets the size of the Earth into the Sun. Everything in the Solar System orbits around the Sun, including 8 planets and their moons, many dwarf planets, asteroids, comets and dust. The mass of the Sun really dwarfs the mass of any other object in the Solar System; it has 333,000 times the mass of Earth. If the Sun were hollow, you could fit more than one million Earths inside of it – you could only fit 1300 Earths inside of Jupiter.The surface of the Sun that we can see is called the photosphere, and it has an average temperature of about 5,800 kelvin. This is the point at which photons generated inside the Sun finally reach the vacuum of space. The Sun’s surface is composed of a number of layers including the photosphere, the chromosphere, and the corona, which are all the outer layers.


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