Facts About Our Neighbouring Planets (plus Pluto and Asteroid Belt)

SciBRIGHT 2014-02-02

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The sun is quite big, but did you know that the sun makes up 99.96 percent of our solar systems mass? That leaves a small 0.14 percent for all the planets, asteroids and other matter around the solar system.

Or how about that the surface temperature of the sun is 5505 degrees Celsius, while six of the eight plants in our solar system have an average surface temperature below 100 degrees Celsius.

The coldest of them all, Neptune, which has a mass the equivalent of 17 Earths, takes a long 165 Earth years to orbit around the sun just once. Since its discovery in 1846 it has only orbited the sun once, which happened in 2011. Think summer is too short hear on Earth? Seasons on Neptune last for more than 40 years, but with Neptune's seasons being harsh and unpredictable it wouldn't be a great place to live, not to mention the average temperature is -200 Celsius.

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