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Chapters 12 The Milky Way Galaxy Quiz

Chapters 12 The Milky Way Galaxy Quiz - Astronomy 101...

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Astronomy 101: Chapter 12: The Milky Way Galaxy 1. Who discovered that, when viewed through a telescope, the Milky Way is resolved into thousands of individual stars? a. Tycho Brahe b.Galileo Galilei c. Isaac Newton d. William Herschel e. Jacobus C. Kapteyn 2. What main conclusion did the Herschels draw from their star counts? a. The Milky Way is a disk of stars with the sun near the center. b. The center of the Milky Way is far away in the constellation Sagittarius. c. All stars have about the same luminosity. d. The sun's luminosity is much higher than that of the average star. e. The Milky Way extends out an infinite distance. 3. Which type of pulsating variable star is the most luminous? 4. What feature of the Cepheid variables that were studied by Henrietta Leavitt in 1912 allowed her to conclude that the period-apparent brightness relation she observed was in fact a period- luminosity relation?
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