First Sentence:
The earth revolves around the sun at a rate of 30 kilometers per second in an almost circular orbit measuring 300 million kilometers in diameter.
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Key Phrases - Statistically Improbable Phrases (SIPs):
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hydrogenous matter, initial sun, radium nucleus, initial main sequence, permitted volume, sunlike stars, visual luminosity, stellar matter, solar matter, piston model, pulsar signals, stellar models, bright blue stars, solar masses, gas tail, neutron matter, hydrogen supply, stellar gas, more massive stars, hydrogen fusion, white dwarf, helium fusion, explosion cloud, developed stars, wavy arrows
Key Phrases - Capitalized Phrases (CAPs):
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Milky Way, Delta Cephei, Zeta Aurigae, Henyey Method, United States, World War, Hunting Dogs, Jocelyn Bell, California Institute of Technology, Martin Schwarzschild, Alfred Weigert, Ludwig Biermann, New York, Cambridge University, Lick Observatory, Tony Hewish, Cuno Hoffmeister, Friedrich Wilhelm Bessel
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