Astronomers are capturing the first-ever video of a black hole using radio telescopes set up all over the world. Bob McDonald, host of Quirks and Quarks, explains what we could learn about the supermassive black hole at the heart of Messier 87 galaxy that's about 50 million light-years from Earth. Read more: cbc.ca/9.7117478 »»» Subscribe to CBC News to watch more videos: http://bit.ly/1RreYWS For breaking news, video, audio and in-depth coverage: https://www.cbc.ca/news Follow CBC News on