Bright Galaxies like to stick together

Astronomers using the European Space Agency's Herschel telescope have discovered that the brightest galaxies tend to be in the busiest parts of the Universe.� This crucial piece of information will enable theorists to fix up their theories of galaxy formation. For over a decade, astronomers have been puzzled by some strange, bright galaxies in the distant Universe which appear to be forming stars at phenomenal rates, making them very hard to explain with conventional theories of galaxy formatio [...]

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