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Q7: What is the "water hole"? Why is
Q24: X-ray bursters occur in binary star systems.
Q38: A(n)_ spiral galaxy has a very bright
Q60: Irregular galaxies, although small, have large H
Q64: Which is the correct description of the
Q64: In the collapsing cloud fragment stage (stage
Q78: _ clusters are much older and richer
Q96: Which is characteristic of globular star clusters?<br>A)old
Q106: Describe qualitatively how the formation of deuterium
Q115: Which of these does NOT exist?<br>A)a million