A brilliant person once said “First get your facts strait, then proceed to distort them at will” or something like that. My question, is what would happen if say… a sun of relative density to our own, but only the size of a golf ball, just appeared in say… downtown LA, and sustained at that size for one minute? What kind of effect could we expect? Would everything nearby simply burst into flames and evaporate? What kind of range could we expect? What if it was a Magnetar? (planet would probably implode around it… Magnetar you scary…) Thank you so much for your input in advance!