Integrated Science (looseleaf)
Integrated Science (looseleaf)
7th Edition
ISBN: 9781259350436
Author: Tillery
Publisher: MCG
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Chapter 12.7, Problem 10SC
To determine

The law that states, “The larger the distance to a galaxy, the larger is the redshift in its spectral lines.”

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The diameter of our disk-shaped galaxy, the Milky Way, is about 1.0×105light-years. The distance to the Andromeda galaxy, which is the spiral galaxynearest to the Milky Way, is about 2.5 million light-years. If a scale modelrepresents the Milky Way and Andromeda galaxies as dinner plates 20 cm indiameter, determine the distance between the centers of the two plates.
Another way of explaining a word is to enumerate the different parts of which it ismade: “X consists of Y and Z”. Define the following words in this way.Solar system, a telescope, galaxy, binary system, open cluster
A scientist, using a telescope, sees arcs of light around a galaxy. In 3–5 sentences, explain the cause of the arcs of light.
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