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Q1: Normal matter is baryonic.
Q10: Hydrogen lines are weak in the spectra
Q10: The rate of heat loss of a
Q37: The Doppler effect in the spectra of
Q39: A hypernova is one of several types
Q41: A partial, or detached, segment of a
Q44: The intercloud medium is believed to make
Q46: The fact that the properties of the
Q52: The motion of gas in accretion disks
Q57: O stars must be formed in spiral