Approximately how far is the Sun from the center of the galaxy?
A) 27 light-years
B) 270 light-years
C) 2,700 light-years
D) 27,000 light-years
E) 27 million light-years
D
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Another name for the leeward slope is
A) upslope. B) downslope. C) rain shadow. D) downslope and/or rain shadow.
The rotation curve of the outer portions of the Galaxy revealed what about its mass?
What will be an ideal response?
The "giant impact hypothesis" refers to the idea that
a. our Moon formed when a Mars-size object collided with the young Earth. b. the planets formed when another star nearly collided with our Sun. c. dinosaur extinction was caused by the impact of an asteroid. d. large craters on the Moon were formed by large impacts.
Astronomers believe that gamma-ray bursters emit radiation equally in all directions
Indicate whether the statement is true or false