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July 10, 2017
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At the end of the previous post, before my brief explanation of the Doppler effect, we left Vespo Slipher pondering the implications of his observations that the Sombrero nebula was moving away from the Milky Way while Andromeda was moving …
July 10, 2017
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Before I recount the rest of my Sunday, there’s a little material remaining in your lesson in astronomy and cosmology and the important role of the Lowell Observatory so let’s get started on that ending. Red shift, blue shift (more …
July 7, 2017
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Not as corny as Kansas in August. Clyde Tombaugh was born in Illinois in 1906 but he grew up in Kansas where his family bought a farm when he was a toddler. Perhaps his unpolluted view of the night sky …