A rock found on Earth that crashed down from space is called ________.
A) an impact B) an asteroid C) a meteor D) a meteorite
Question 2
How would you expect a star that formed recently in the disk of the galaxy to differ from one that formed early in the history of the disk?
A) It should have a higher fraction of elements heavier than hydrogen and helium.
B) It should be much brighter.
C) It should be higher in mass.
D) It should orbit the galactic center at a much higher rate of speed.
E) All of the above would be expected.
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