1. they were called quasars (quasi-stellar) back in the day before we knew that these small but very powerful astronomical 'things' were black holes. 2. Why do black holes eject high energy matter @neiltyson ?? I understand why the superheated gas emits x-rays going in.
When supermassive black holes 
voraciously devour material, they belch brilliant fireworks called quasars. Astronomers believe quasars limit the growth of massive galaxies. Using #NASAWebb, scientists will study how quasars influence their host galaxies: https://go.nasa.gov/2YeZ6EU pic.twitter.com/oO7OdIHCik
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Thanks. Twitter will use this to make your timeline better. UndoUndo
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I thought this was Earth after 4 more years of tRump.
#BidenHarris2020ToSaveAmericaThanks. Twitter will use this to make your timeline better. UndoUndo
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