Astronomers using the NASA/ESA Hubble Space Telescope have detected tidal tails in NGC 1052-DF4, a dark-matter-deficient galaxy some 65 million light-years away in the constellation of Cetus, caused by its interaction with its neighboring galaxy NGC 1035. The researchers think that a process called tidal disruption stripped the dark matter from NGC 1052-DF4 and is now tearing the galaxy apart. This Hubble image shows the ultra-diffuse galaxy NGC 1052-DF4;...
