Hubble telescope finds most distant star ever seen

The video discusses a distant star observed by the Hubble Telescope, located 9 billion years from Earth. The star was seen due to gravitational lensing, where starlight is bent by a galaxy's gravity. The star, a luminous blue supergiant, is similar in size to the sun but much hotter. Researchers confirmed it wasn't a supernova and tested a dark matter theory involving primordial black holes. However, the theory wasn't supported as different light patterns would have been observed if black holes were present.

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