Keywords
Black Holes
Abstract
Black holes were predicted long ago by scientists like Albert Einstein and Karl
Schwarzschild. However, they had never been seen until recently: In 2009, the Event
Horizon Telescope was launched. It is a telescope array that consists of a global
network of 12 radio telescopes. It was built to observe two supermassive black holes
which are Sagittarius A* and Messier 87 (M87). On April 10, 2019, the Event Horizon
Telescope Collaboration announced taking the first direct image of a black hole. The
image featured the massive black hole at the center of Messier 87 galaxy