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Q13: Which star is most similar to the
Q20: Which cluster is 10 billion years old?<br>A)
Q23: What will happen to the star after
Q54: Clouds that appear dark in visible light
Q64: Suppose you find a meteorite made almost
Q69: Dr.Smith believes that the Hubble constant is
Q83: The astrometric technique looks for planets with
Q91: The average speed of stars relative to
Q103: Suppose a white dwarf is gaining mass
Q138: Two stars both lie on the main