Astronomers baffled by distant galaxy void of dark matter - KWWL - Eastern Iowa Breaking News, Weather, Closings

Astronomers baffled by distant galaxy void of dark matter

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WASHINGTON (AP) -- Astronomers have found a distant galaxy where there is no dark matter, the invisible stuff that makes up more than a quarter of the universe.

Scientists only know dark matter exists because they can observe how it pulls and pushes things they can see, like stars. It's supposed to be everywhere.

But Yale University astronomer Pieter van Dokkum and colleagues spied an old galaxy with relatively few stars where what you see truly is what you get. They say the stars in the galaxy are traveling at a speed that suggests no influence from dark matter.

The study is in Wednesday's journal Nature.  Scientists have no good explanation for how this could be, but outsiders said the researchers calculations appear to be sound.

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