The diameter of our disk-shaped galaxy, the milky way, is about 1.0 x 10^5 light-years (ly). the distance to the andromeda galaxy, which is the spiral galaxy nearest to the milky way, is about 2.0 million ly. if a scale model represents the milky way and andromeda galaxies as dinner plates 25 cm in diameter, determine the distance between the centers of the two plates.
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The diameter of our disk-shaped galaxy, the milky way, is about 1.0 x 10^5 light-years (ly). the dis...
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