"Giant black hole in tiny galaxy confounds astronomers"

Somewhere amongst these lights is a very big black hole.

"This galaxy seems to be very old," Dr Van den Bosch said. "So somehow this black hole grew very quickly a long time ago, but since then that galaxy has been sitting there not forming any new stars or anything else.

"We're trying to figure out how this happens, and we don't have an answer for that yet. But that's why it's cool."

By Jason Palmer
Science and technology reporter, BBC News