TON 618 is a very distant black hole that NASA called "behemoth." Its mass is more than 60 billion suns, and any light from it takes more than 10 billion years to reach the Earth. Ton 618 has an apparent magnitude of 15.9, which means it's about 1000 times fainter than the faintest star you can see with your naked eye. Fun fact: TON 618 is short for Tonantzintla 618