I don’t know if your talking about the black hole but... Astronomers believe that supermassive black holes lie at the center of virtually all large galaxies, even our own Milky Way. Astronomers can detect them by watching for their effects on nearby stars and gas.
I believe the answers here are both 3 and 4: <span>Miss Maudie invites the Robinson family to her house. -Mr. Underwood writes an editorial criticizing the verdict