Newton's law of universal gravitation 1970-01-01
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Observable universe 1970-01-01
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Orbit 1970-01-01
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Parallax in astronomy 1970-01-01
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Planet 1970-01-01
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Quasar 1970-01-01
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Radial velocity 1970-01-01
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Star 1970-01-01
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Stellar classification 1970-01-01
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Stellar nucleosynthesis 1970-01-01
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Stellar parallax 1970-01-01
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Variable star 1970-01-01
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White hole 1970-01-01
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