An international team of astronomers have discovered a massive dark object in orbit around a rapidly spinning millisecond pulsar. This unusual object was found as part of a binary system, a pulsar and an unknown compact object, in the globular cluster NGC 1851. Globular clusters are unique environments with hundreds of thousands of stars packed closely together, and likely places to produce strange cosmological pairs. While astronomers cannot conclusively say whether they have discovered the most massive neutron star known, the least massive black hole known, or even some new exotic star variant, what is certain is that they have uncovered a unique approach for probing the properties of matter under the most extreme conditions in the Universe.