The video shows a black hole in the center of a galaxy with a bright light shining from it. The black hole is surrounded by a swirling mass of stars and gas. The light from the black hole is a bright yellow-orange color, and the surrounding galaxy is a mix of blue, purple, and pink hues. There is a text overlay that reads, "THE EMISSION SPECTRAL LINES ARE VERY WIDE, INDICATING THAT THE MEAN SQUARE VELOCITY OF MATTER IN THE EMISSION REGION IS VERY HIGH, 3,000-10,000 KM/S."