An inte ational team of astronomers has discovered a 'bubble of galaxies' believed to be a large cosmic structure.
It is said that this is considered to be a fossilized remnant after the Big Bang.
This bubble is reported to be 10,000 times wider than the Milky Way galaxy.
It is centered about 820 million light years from our galaxy.
It is also said that this discovery provides a clear picture of the expansion rate of the universe.
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