An international team of astronomers has accurately measured the distance from Earth to a black hole for the first time. (Credit: Image courtesy of SRON Netherlands Institute for Space Research)From Science Daily:
Science Daily (Dec. 14, 2009) — An international team of astronomers has accurately measured the distance from Earth to a black hole for the first time. Without needing to rely on mathematical models the astronomers came up with a distance of 7800 light years, much closer than had been assumed until now. The researchers achieved this breakthrough by measuring the radio emissions from the black hole and its associated dying star.
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