What is it exactly about these flares of infrared light from Sgr A* that "confirms" it is a supermassive black hole?
How did they make a video of the center of the galaxy, and what is it exactly that's flashing there?
Why didn't all the iron and heavier elements find their way to the center of the accretion disc in the early solar system?
Why would the merger of spinning black holes within the accretion disk of a supermassive black hole cause them to "shoot straight up" out of the disk?
How will they know when to start taking the picture of the black hole at the center of the Milky Way?
Why are accreting objects portrayed with a white flash at the point where the gas stream from the star enters the accretion disk?
What enhances the capture and merge rates of pairs of small black holes orbiting around supermassive black holes?
How does gas in accretion disks of supermassive black holes create orbital torques on smaller black holes within the disks causing them to migrate?
How did astronomers "measure a large (>40 degrees) misalignment between the black hole spin and the orbital spin" of MAXI J1820+70?
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