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G327.1-1.1 G11.2-0.3 3C 273 Flame Nebula Cassiopeia A Positive Feedback Black Hole Uranus
Milky Way Galactic Center N132D Ant Nebula Hercules A Westerlund 2 RCW38
Eta Carinae 3C 397 Abell 1795 Tycho's Supernova Remnant NGC 2207 and IC 2163 Westerlund 2