It took a long time for people to admit that our small piece of meteor debris was not the exact and absolute center of the universe. It really is, right? The astronaut may not need so much time to learn ...
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Egocentric Orbit pdf
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It took a long time for people to admit that our small piece of meteor debris was not the exact and absolute center of the universe. It really is, right? The astronaut may not need so much time to learn ...
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