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Q5: What provides us the best clues as
Q15: The most straightforward way to determine the
Q29: Brown dwarfs are considered failed stars because<br>A)
Q30: What is the central idea in relativity
Q38: Why do very massive stars collapse, causing
Q42: Interstellar clouds are<br>A) hydrogen gas condensed out
Q43: Why can Type Ia supernovae be used
Q85: In spiral galaxies, the size of the
Q85: The net effect of the proton-proton chain
Q97: Sagittarius A*, the radio source located at