Galaxy clusters are formed by a dense packing of many galaxies, making them the most massive structures in the universe.
For more than a century, scientists have wondered why physical structures like blood vessels, neurons, tree branches, and ...
Space.com on MSN
'Super star' being shredded by black hole releases as much energy as 400 billion suns
"This was many times more energetic than any similar event and more than any known explosion powered by the collapse of a ...
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