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What event occurs at the end of the protostar stage of a star's life?
Q59: Over which stage of stellar evolution does
Q62: Two close binary stars exchange mass.Each of
Q115: Most supernova remnants have been discovered by
Q164: The helium flash is another name for
Q181: X-ray bursters emit occasional and intense bursts
Q184: Which stars are metal-poor?<br>A) open-cluster stars<br>B) very
Q201: Suppose we observe the light curve of
Q227: The star Sirius (α Canis Majoris)is actually
Q284: Suppose that an astronomy news item announces
Q297: The apparent reddening of light from stars