Astronomers Witness , Merger of 2 Black Holes, From the 'Cosmic Dawn'.br 'The Independent' reports that NASA's br Webb Space Telescope has made the most br distant detection of merging black holes. .br Two gigantic black holes and the galaxies that they stood br at the center of merged together just 740 million years br after the universe was formed in the Big Bang.br One of the black holes is a staggering 50 million br times larger than our Sun, and the other br is believed to be a similar gigantic size. .br Astronomers have long wondered how supermassive black holes are so big. .br Lead author Hannah Ubler of the University of Cambridge br says the findings suggest that mergers like this ancient br example show how black holes are able to grow so rapidly.br According to Ubler, the latest Webb br discovery also suggests that black holes br have been merging since the "cosmic dawn.".br Massive black holes br have been shaping br the evolution of galaxies br from the very beginning, Hannah Ubler, lead author from the University br of Cambridge, via 'The Independent'.br In 2021, NASA launched Webb, intended br to replace the Hubble Space Telescope.br Webb is the largest and most powerful br observatory ever launched into space. .br The joint U.S.-European project surveys br the universe from a vantage point located br about 1 million miles away from Earth.