How Earth Moves

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#earth #sun #astromony #orbit #rotation #geometry #day length #vsauce #michael stevens #universe #cosmic microwave background #cmb #spacetime #learn #edutcation #calendar #gregorian #julian #dates #time #year #solar time #sundial #clock

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Messages For The Future

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What If The Sun Disappeared?

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Spinning

16:54

• − − • • • − • − • • • − − •

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Is It Okay to Touch Mars?

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How To Count Past Infinity

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The Great Silence

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How Much of the Earth Can You See at Once?