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Also known as 47 Tucanae, this is the second most prominent globular cluster in the entire sky - only Omega Centauri is brighter. To the naked eye, it resembles a hazy star. It appears in the sky near the Small Magellanic Cloud but is actually within our own galaxy. It is not yet clear whether 47 Tucanae hosts a central black hole. Hubble Space Telescope data constrain the mass of any possible black hole at the cluster's center to be less than approximately 1,500 solar masses. However, in February, 2017, astronomers announced that a black hole of some 2,200 solar masses may be located in the cluster; the researchers detected the black hole's signature from the motions and distributions of pulsars in the cluster.