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The Solar System
| Question | Answer |
|---|---|
| innermost layer of the sun | inner core |
| mass of the sun | 2x10 to the power of 30 |
| the suns age | 4.5 billion |
| how the sun was formed | like all stars are formed |
| what is the sun made of | mostly made of H and He, and the rest is made of heavy elements |
| sun's core temperature | 15,000,000 degrees Celsius |
| Mercury | rocky and closest to the sun |
| Venus | hottest planet |
| Earth | only inhabited planet |
| Mars | between Earth and Jupiter |
| Jupiter | has rings, never-ending storm, between Mars and Saturn |
| Saturn | between Jupiter and Uranus |
| Uranus | between Saturn and Neptune |
| Neptune | farthest from the sun, after Uranus |
| photosphere | middle layer of the sun |
| chromosphere | outer layer of the sun |
| Venus | between Earth and Sun |
| Earth | between Venus and Mars |
| 4 rocky planets | Mercury, Venus, Mars and Earth |
| gaseous planets | Saturn, Uranus, Neptune |