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Astronomy!!!!
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Astronomical Unit 149 597 871 kilometers
This is the average distance between the earth and the sun
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Light Year The distance traveled by light in one Earth year
This is a unit of length
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Alice and Bob https://www.youtube.com/watch?v=iKTv-BDZ8Os
Why is it dark at night? Is that star really there? Why are we looking through time when we look at the stars at night?
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Nebula Also called diffuse nebula. a cloud of interstellar gas and dust
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Stars A celestial body that generates light and other radiant energy and consists of a mass of gas held together by its own gravity in which the energy is generated by nuclear reactions. Plasma. Any of the celestial bodies visible at night from Earth as relatively stationary, usually twinkling points of light.
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Betelgeuse – taken with Hubble Telescope
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Documentaries https://www.youtube.com/watch?v=qcfN_HN4TVg
National Geographic Hubble History (2009) Distances and Planets like ours Spectacular photos from space.
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Necessities for Life
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