Light Travel Time
Light Travel Time
Transcript: Since light has a finite speed, three hundred thousand kilometers per second, there’s an inevitable conseque... Read more
24 Jul 2011
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1min
White Dwarf Stars
White Dwarf Stars
Transcript: Some stars in the sky, somewhat hotter than the Sun with temperatures of 5 thousand to 10 thousand Kelvin, h... Read more
24 Jul 2011
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Super Giant Stars
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Transcript: Certain rare stars in the sky with either red or blue colors are extremely luminous, up to a million times t... Read more
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Giant Stars
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Transcript: A cool main sequence star with a temperature of about three thousand Kelvin lies on the main sequence with a... Read more
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Main Sequence Stars
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Transcript: As was first seen nearly a hundred years ago, when luminosities and effective temperatures are gathered for ... Read more
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HR Diagram and Stellar Size
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Transcript: The H-R diagram is a plot of spectral class, or equivalently effective temperature, against stellar luminosi... Read more
24 Jul 2011
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Hertzsprung-Russell Diagram
Hertzsprung-Russell Diagram
Transcript: As a way of exploring stellar properties and understanding how stars work, in the early twentieth century tw... Read more
24 Jul 2011
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Stellar Evolution
Stellar Evolution
Transcript: A human lifetime is a blink of an eye compared to the age of the stars which can be hundreds of millions or ... Read more
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Stellar Classification
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Hydrostatic Equilibrium
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24 Jul 2011
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