The Woman Who Measured the Stars
How Henrietta Leavitt found a way to measure the distance to stars
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Wren: 32 min · Hollis: 35 min
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A light on a long road
apparent brightness, luminosity
A sky made of glass
photographic plate, computer, negative, magnitude, variable star
The breathing stars
Small Magellanic Cloud, period, Cepheid, period-luminosity relation
The lamp at the end of the road
parallax, standard candle, light-year, galaxy, Leavitt's Law
Goodnight, Henrietta
the wind-down