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_________ is a form of electromagnetic radiation produced by rapidly moving electrons spiraling through magnetic fields.
Q6: _ associations and _ associations are groups
Q17: An isolated black hole in empty intergalactic
Q19: The galactic halo or corona is believed
Q47: The spectrum of a(n) _ consists of
Q47: Hydrogen fusion does not occur in stars
Q72: Refer to Figure 12-1. A Type II
Q95: There is only one form of neutrino.
Q105: Dark energy is the name of the<br>A)force
Q141: On the H-R diagram below, indicate the
Q167: What is the correct order of densities