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The Cosmic Perspective Fundamentals | 2nd Edition | ISBN: 9780133889567 | Authors: Jeffrey O. Bennett; Megan O. Donahue; Nicholas Schneider; Mark Voit
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QUESTION:

Problem 4QQ

Choose the best answer to the following. Explain your reasoning with one more complete sentence.

The star Antares is 604 light-years away. If it explodes tonight, (a) we’ll know because it will be brighter than the full Moon. (b) we’ll know because debris from the explosion will rain down on us from space. (c) we won’t know about it for another 604 years.

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QUESTION:

Problem 4QQ

Choose the best answer to the following. Explain your reasoning with one more complete sentence.

The star Antares is 604 light-years away. If it explodes tonight, (a) we’ll know because it will be brighter than the full Moon. (b) we’ll know because debris from the explosion will rain down on us from space. (c) we won’t know about it for another 604 years.

ANSWER:

Solution 4CQ

Step 1 of 2:

In this question, It is assumed that the star Antares which is 604 light years away from us explodes tonight, we need to choose among the options given and explain the reason for choice

Options

  1. We will know, it will be brighter than full moon
  2. We will know, because debris from the explosion will rain down on us from space
  3. We won't know about it for another 604 years

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