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Re: 2019: On this day . . .
[Re: Mona - Astronomy]
#930979
05/15/19 08:32 AM
05/15/19 08:32 AM
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Joined: May 2010
Posts: 8,484
United Kingdom
Mona - Astronomy
OP
BellaOnline Editor
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OP
BellaOnline Editor
Stone Age Human
Joined: May 2010
Posts: 8,484
United Kingdom
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On this day in 1857 - May 15th - Scottish-American astronomer Williamina Fleming was born.Fleming, a computer at Harvard College Observatory, was a pioneer in the classification of stellar spectra. During the course of her career, she also discovered 10 novae, 52 nebulae, and 310 variable stars.
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Re: 2019: On this day . . .
[Re: Mona - Astronomy]
#930980
05/15/19 08:38 AM
05/15/19 08:38 AM
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Joined: May 2010
Posts: 8,484
United Kingdom
Mona - Astronomy
OP
BellaOnline Editor
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OP
BellaOnline Editor
Stone Age Human
Joined: May 2010
Posts: 8,484
United Kingdom
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On this day in 1718 - May 15th - Johannes Kepler discovered the simple mathematical rule governing the orbits of the solar system's planets, now recognized as Kepler's Third Law of planetary motion.Kepler's three laws described the orbital motions of the planets in a solar system where they orbited the Sun, not the Earth.
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