An international team of astronomers led by Georg-August-Universität Göttingen researcher Benjamin Giesers has discovered a star in the globular cluster NGC 3201 that is behaving very strangely. The star appears to be orbiting an inactive black hole with a minimum mass of 4.36 solar masses. A paper describing the discovery is published in the Monthly Notices of the Royal Astronomical Society (arXiv.org preprint). Artist’s impression of the black...