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Some random facts about the sun

Posted by air_lifter Sunday, January 27, 2013 ,


1. If the sun were to "turn off", the Earth would completely freeze within a week with a temperature of 0 degrees Fahrenheit even in the equator. In a year's time it would dip to -100 degree Fahrenheit, and millions of years later it would be a stable -400 degrees Fahrenheit.

2.The sun is getting hotter, becomming 10% more luminous around every billion years. This could mean that in a billion years, there will be no liquid water on Earth.

3. The sun is comprised of 72% hydrogen, 26% helium and other trace elements. These dense mass of gases makes up 99% of all the mass in our solar system.

4. The sun puts out a huge amount of energy to heat the solar system. Every second around 700 million tons of hydrogen are converted into helium ashes by the sun's fusion process.

5. The sun's surface is comparatively colder than its atmosphere, at around 6000 Kelvin. The atmosphere can reach 10,000K while the core is about 1 million Kelvin.


6. The sun is around 25,000 light years away from the center of the Milky way galaxy. It takes about 240 millions years to orbit once around the galactic center.

7. Different sections of the sun rotate at varied speeds, as it is made of gas. The equator regions rotate around every 25 days, whereas the poles take about 36 days to complete one rotation around the sun.

8. On some planetary bodies and moons, there exists a "peak of eternal light" where the sun never sets. This is due to the angle of rotational axis on relation to the sun.

9. The sun is middle aged. Astronomers believe it formed around 4.59 billions years ago. In 5 billion years time, it will enter the red giant phase of its life time.

10. 100,000,000,000 tons of dynamite would have to be detonated every single second to match the energy that the sun produces.

Source: universitytoday.com

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