Sagittarius A* has been seen by human eyes with an "image produced by a global research team called the Event Horizon Telescope (EHT) Collaboration" according to the European Southern Observatory. The black hole lies 27,000 light-years away and has a mass about 4 million times the Sun’s mass.br br Credit: Space.com | footage courtesy: ESOL. Calçada, N. Risinger (Sky Survey), DSS, VISTA, VVV SurveyD. Minniti DSS, Nogueras-Lara et al.