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Q15: Where was supernova 1987A located?<br>A)in the Orion
Q17: Like most pulsars, the Crab Nebula neutron
Q42: According to their rotation curves, most spiral
Q61: In a visual binary system with circular
Q63: On the H-R diagram, white dwarfs like
Q70: What makes the Crab Nebula supernova remnant
Q82: Contrast dark matter and dark energy with
Q85: For our Sun, the production of carbon
Q86: Refer to the figure above. What is
Q95: At what stage of evolution do T