Using the James Webb Space Telescope (JWST), researchers from the University of Cambridge have discovered the oldest black hole ever observed, located in the GN-z11 galaxy. This black hole formed just 400 million years after the Big Bang and challenges current theories about black hole formation due to its immense size, which is a few million times the mass of the Sun. Typically, supermassive black holes are thought to grow over billions of years. Still, this discovery suggests alternative formation methods, such as being ‘born big’ or consuming matter at an unexpectedly high rate. 

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