Interesting fact:

What you see here is the supermassive black hole at the centre of M87, a galaxy 55 million light years away. This cosmic behemoth is the size of our entire solar system and has the mass of 6.5 billion – BILLION! – suns. To capture the image of the glowing event horizon, scientists combined the power of radio telescopes on four continents, effectively creating a dish the size of Earth. Processing the collected data took two years – the result is a scientific breakthrough that confirms all of Einstein’s predictions and an inspiring example of what humanity can achieve by working together.