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Solar System Anthony and Johnny • The sun and the group of planets and bodies that orbit it. What is a Solar System The Sun • Center of the solar system • Closest star to Earth • A body of hot gasses that makes its own light and heat which is called a star • Over 100 Earths could fit in the Sun • Medium sized star • 25,000000 degrees F Inner Planets • • • • Small,ball shaped Solid and rocky They have craters 4 planets are in the inner solar system are named Mercury, Venus, Earth, and Mars Mercury • Nearest planet to the sun • One day is as long as a year • Called messenger of the gods • Smallest planet • Has no atmosphere • Has lots of craters • 750 degrees during day and -300 degrees at night Venus • Hottest planet because of thick carbon dioxide atmosphere • Lava flows from perminite volcanoes • Called love god • High winds could blow a car away Earth • Only planet with liquid water and oxygen to support life • Protective blanket of air that is called a atmosphere MARS • Thin atmosphere-lots of craters • Nicknamed by Romans god of war • Scientists think there may have been an ocean on Mars in the past • Covered in red rocks made out of iron oxiderust • Polar ice caps and possibly underground ocean Asteroid Belt • Believed that asteroids in asteroid belt are billions of fragments of rocks leftover from the formation of the solar system. • Some pieces are dislodged and enter earth’s atmosphere and burn up and are called a meteorite or shooting star. Outer Planets • • • • Farthest planets from the sun All have rings Gas giants Rings are made of ice, gas, and dust Jupiter • Biggest planet • Great red spot is a raging hurricane • King of all roman gods • Rocky core • Core is twice as big as earth • 1300 earths can fill Jupiter Saturn • Saturn has the brightest rings • Rings are made out of ice, dust, and rock • Leftover rocks are as small as your pinkie to as big as a refrigerator • Nicknamed roman god of farming Uranus • Named Greek god of heaven and the after whole world • Called sister of Neptune • Featureless • Rotates on its side • 64 Earths could fit in Uranus Neptune • • • • Has clouds of white Great dark spot is a big storm God of under world Biggest moon is Tritan Pluto • Considered dwarf planet • Used to be called ninth planet • Scientists think it’s a moon that was knocked out of its orbit Black Holes • Impossible to get away from • • • • Former large star Light can’t get out of a black hole Attracts matter from a star They eventually evaporate and turn into thin gas The End