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What was the first evidence that quasars were different from astronomical objects before they were observed in visual wavelengths
Q20: What was the first evidence that quasars
Q61: Neutron stars were first discovered in the
Q68: Fragmenting during meteorite impacts caused the vesicular
Q76: _ emit radio energy from areas on
Q84: Stars within a cluster that are at
Q86: Which stage of planetary formation is shown
Q95: Prior to 10-36 seconds, the Universe existed
Q108: The helium flash is the cause of
Q108: HII regions are found near stars cooler
Q114: Why do many planetary nebulae show ring-like