By Carly Minsky
In November, astronomers at the Chinese Academy of Sciences in Beijng published a paper identifying 19 galaxies which might violate the most fundamental theory of how the universe first formed.
They had been searching the sky for yet-undiscovered galaxies which seem to be lacking the usual dark matter component, aiming to add more evidence to a baffling phenomenon scientists had begun observing last year. And they claimed to have found a whole group of them.
Until recently, it was almost unanimously assumed that huge amounts of invisible dark matter was the key to galaxy formation; the gravitational effects experienced and induced by clumps of dark matter in the universe produced swirling disks of gas clouds, stars and dark matter. Dark matter had to make up the majority of matter in these galaxies, according to standard models of the universe, otherwise they would never have formed.
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