Solar System.

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Presentation transcript:

Solar System

Ideas About the Universe How big? ? 40 Feet Long ? 2 thousand miles diameter ? 75 thousand miles diameter ? 875 thousand miles diameter ? 600 trillion miles across ? 600 thousand trillion miles across ? 600 million trillion miles across ?

Ideas About the Universe How Far? ? 350 miles ? 250 thousand miles ? 93 million miles ? 790 million miles ? 2400 trillion miles ? 200 million trillion miles ? 30 billion trillion miles ?

Ideas About the Universe How Old ?? About 25 years ? 80 million years ? ~4.5 billion years ? ~4.5 billion years ? ~4.5 billion years ? ~10 billion years ? ~10 billion years ?

Objects in the Solar System The Sun Planets Dwarf Planets Asteroids Comets

Astronomical Unit (AU) The average distance from Earth to the Sun About 150 million km

Motion of Planets Revolution Rotation Time it takes an object to travel once around the sun Rotation Time it takes an object to spin once on its axis

Motion of Planets Elliptical Orbit Planets travel in an elliptical orbit

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