Astronomical distances. Spiral galaxies like our own Milky Way measure approximately 2 10 5 light-years in
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Astronomical distances. Spiral galaxies like our own Milky Way measure approximately 2 × 105 light-years in diameter, where 1 light-year (ly) equals the distance traveled by light in 1 year. Our nearest-neighbor galaxy is the great spiral galaxy Andromeda, which has been determined to be approximately 2.5 million ly away. Construct a scale model to show the sizes of the Milky Way and Andromeda galaxies using two pie tins each 20 cm in diameter. To keep the model to scale, how far apart would these pie tins need to be separated?
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The use of ratios is appropriate here First look a...View the full answer
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Related Book For 
College Physics Reasoning and Relationships
ISBN: 978-0840058195
2nd edition
Authors: Nicholas Giordano
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