The Great Wall is a huge sheet of galaxies that stretches for over 100 Mpc.
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Q43: As we look at larger and larger
Q44: Collisions between galaxies
A) cause large numbers of
Q45: Redshift surveys are designed to find which
Q46: The pregalactic blobs had masses similar to
A)
Q47: Collisions between galaxies are thought to
A) be
Q49: Which of these is the next evolutionary
Q50: Based on galactic rotation curves and cluster
Q51: The type of radio galaxy that reveals
Q52: A radio galaxy whose lobes are swept
Q53: When we see a doubling of the
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