Using a Telescope to Measure the Speed of Light

i love these stories where you've like cornerd the universe into revealing some piece of information. This guy didn't build this experiment. He discovered this experiment. And all i have to do is use my telescope and calculate a few numbers, and boom. Now i have this number resting. Did they get pretty close to what the actual speed of light is? He got to within about 20 % of the real speed of light, which is pretty incredible. That's like a b b minus. Well, it's much better than galileo did. Your galileo got an f. So at least the sky is passing well,. technically, i don't know, cause lo thought it