L_Hudson_Discussion1
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Baker College *
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Course
321
Subject
Astronomy
Date
Apr 3, 2024
Type
docx
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2
Uploaded by JudgeElephant3928
1.
Why were ancient populations so taken with the stars and planets? What was
your first memory of viewing the night sky?
Ancient population was so taken with the stars and planes because back then
human survival depended on knowledge of the heavens to be able to accurately predict seasons and other events. Seafarers needed to know to navigate their vessels and farmers needed to know when to plant their crops.
2.
Identify one of the mysteries of the universe or people who sought to understand the universe. Did the scientific method play into the early understanding? What was the basis for study of that period? In your response (a), describe the person or phenomena (b), how were the ideas for understanding accepted for that time, and (c), how does it fit with society's understanding of the universe today? How does it fit with astronomers' understanding of the universe today? How does this fit with your personal belief of the universe?
Galileo Galilei is a person that sought to understand the universe, his findings created a revolution in astrology. He used an optical telescope. What he found were stars clustering along the milky way, moons and rings around the outer planets. What he found disagreed with the beliefs of the time. the views for the time were that the heavens were perfect and unchanged.
3.
Review "Kepler's Second Law" lab in Mastering Astronomy. State Kepler's Second Law, and describe what you observe about the green shaded region. Is a planet's orbital speed constant? What did Kepler observe about the orbit of Mars that helped him conclude its orbit is elliptical?
Keplers second law stated that an imaginary line connecting the Sun to any planet sweeps out equal areas of the ellipse in equal intervals of time. The green shaded regions are equal in area. A planets orbital speed varies. Kepler’s first two laws explained the variations in planetary brightness and peculiar nonuniform motions which helped him conclude its orbit is elliptical.
4.
Briefly describe the Ptolemaic and Copernican models of the solar system. What was the basic flaw of the Ptolemaic system? Is the Copernican model also flawed? If so, in what way? A planet to the sun.
Ptolemaic and the Copernican models of the solar system predict that Venus should show phases as it moves in its orbit. The basic flaw of Ptolemaic is its assumption of a geometric universe.
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