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A scientific theory can be proven true if the correct experiments are performed.
Q17: A pulsar requires that a neutron star<br>I.
Q23: _ is the separation of material in
Q34: The densest, coldest clouds are called _.<br>A)
Q72: The elements hydrogen and helium were made
Q85: _ galaxies are very luminous at X-ray
Q86: What observation made of other stars seems
Q88: Hypothesize what kind of galaxy would result
Q105: Planetary nebulae are sites of planet formation.
Q105: Why do astronomers believe supermassive black holes
Q129: Both the CNO cycle and the proton-proton