Lo que los antiguos vieron en el cielo - Astronomía para aficionados - Día 1, Parte 1
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Aristarco Parte 1 - Astronomía para aficionados - Día 1, Parte 2a
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Electricity, Magnetism and Special Relativity
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The most surprising discoveries from our universe – with Chris Lintott
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A Brief History of the Discovery of Electricity - DC and AC Circuits - Day 1, Part 1
12:52
Brian Cox on how black holes could unlock the mysteries of our universe
12:12
Introduction to Astronomy: Crash Course Astronomy #1
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Naked Eye Observations: Crash Course Astronomy #2
48:13