Astronomy - b6yb Astronomy the study of the universe 2...

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+b6yb Astronomy – the study of the universe 2 ideas about the big bang universe started out hot the hotter the universe started the more mass in the universe the universe cools as it expands Nuclear fusion in stars creates higher elements Evolution of the stars releases the elements New stars form with higher content of these higher elements Planetary systems are formed Degenerate matter When it occurs within seconds the star goes nova This is when the other elements start to become created Stars → Galaxies → Super Clusters Rotate on earth at 600 mph Orbiting around the sun 60,000 MPH Traveling in the Milky Way 500,000 MPH Traveling in local group at 180,000 MPH light is energy (photons) light travels at finite speed light speed = 2.9979 x 10^8 meters per second 1 light year = 5.88 trillion miles light allows us to look back in time a light year is not time, its distance scale of solar system stellar scales galactic scales universe scales human scale in the universe
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Astronomy - b6yb Astronomy the study of the universe 2...

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