On a cosmic calendar,in which the history of the universe is compressed into 1 year,when did Kepler and Galileo first discover that we live on a planet in a solar system?
A) 1 second ago
B) 1 day ago
C) 1 week ago
D) December 25
E) December 30
Correct Answer:
Verified
Q20: On the 1-to-10-billion scale,about how far is
Q21: Which of the following correctly lists speeds
Q22: From the fact that virtually every galaxy
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Q24: If you represented each star by a
Q26: On a cosmic calendar,in which the history
Q27: On a cosmic calendar,in which the history
Q28: Most of the mass in the Milky
Q29: If we use 1 millimeter to represent
Q30: What is an astronomical unit?
A)the average speed
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