Some scientists are claiming that they have found the most massive entity in the universe. From the article:
The galaxy known prosaically as M87 doesn’t look like much. Unlike beautiful spiral galaxies (including the Milky Way), M87 appears as an orangish blob of stars through telescopes. Its only noticeable feature is the long streamer of gas emanating from the galactic center.
The source of that jet is far from prosaic, however: It’s a black