Images: Observatories at the top of the world

The Canada-France-Hawaii Telescope enabled a team of astronomers to discover the most distant black hole, located nearly 13 billion light-years from the Earth. The type of black hole known as a quasar, sucks in gas, which makes it heat up and glow brightly.

The Canada-France-Hawaii Telescope site describes the image: "In this picture, three different filters (r' i' and z') have been combined to show how red the quasar (indicated by the arrow) is compared to stars or galaxies in the field. To be that red is a good indicator that the object is a very distant quasar, though a spectrum is needed to confirm its distance."