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How Big Are Supermassive Black Holes?
NASA compares the universe's biggest black holes with "each other and to our solar system," in this Goddard Space Flight ...
At the heart of the Milky Way, just 27,000 light-years from Earth, there is a supermassive black hole with a mass of more ...
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The universe’s biggest structure that shouldn’t exist
The Hercules-Corona Borealis Great Wall stretches 10 billion light years, defying physics that suggest structures of that size should be impossible.
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