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The nuclear reaction that produces most of the energy for massive main-sequence stars is called the CNO cycle.
Q8: You find a star orbiting about the
Q16: How does the thickness of Saturn's bright
Q27: Stars in the disks of spiral galaxies
Q31: Interstellar clouds are:<br>A)hydrogen gas,condensed out of the
Q38: Black holes emit no light whatsoever.
Q41: Explain why no object that has mass
Q44: The most straightforward way to determine the
Q45: Until spacecraft flew by asteroids,scientists did not
Q47: Gravity is nothing more than a curvature
Q80: Einstein's special theory of relativity implies that