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Trio of Big Black Holes Spotted In Galaxy Smashup
sciencehabit writes Astronomers staring across the universe have spotted a startling scene: three supermassive black holes orbiting close to one another, two of them just a few hundred light-years apart. The trio, housed in a pair of colliding galaxies, may help scientists hunting for ripples in spacetime known as gravitational waves.
For all intents and purposes, the objects are the same distance from Earth. They're 450 light-years from each other and both are approximately 4.3 BILLION light-years from Earth. The maximum difference in distance between object A and Earth and object B and Earth is 0.000010465116% (450 / 4.3x10^9 * 100). Close enough to the same distance. For reference, the same delta applied to 1 AU (93,000,000 mile Earth-Sun distance) yields 9.73 miles.
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