https://www.sciencealert.com/images/...-paths_600.jpg
Astronomers developed a set of equations that can precisely describe the reflections of the Universe that appear in the warped light around a black hole
https://www.sciencealert.com/images/...-paths_600.jpg
Astronomers developed a set of equations that can precisely describe the reflections of the Universe that appear in the warped light around a black hole