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Q1: Stars larger than about 1.4 solar masses
Q7: Stars that formed in the very early
Q8: The range of diameters and luminosities displayed
Q27: What astronomical object is the most important
Q43: A lens called the _ is typically
Q47: The Universe has_.<br>A) an edge, does not
Q50: The dense disks of gas and dust
Q52: The Stefan-Boltzmann law relates the _.<br>A) energy
Q67: Stars in the central bulge of the
Q68: The hydrogen lines of spectral type A