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Q8: From a theoretical standpoint,what is a pulsar?<br>A)a
Q10: How are interstellar bubbles made?<br>A)by the collapse
Q12: Which of the following may be caused
Q27: A 10-solar-mass star is about ten times
Q32: Why does the plasma tail of a
Q35: Why does a cloud collapse rapidly at
Q55: All the following statements about known extrasolar
Q59: What part of a comet points most
Q105: The fundamental nuclear reaction occurring in the
Q122: Which of the following terms is given