Astronomers Find Hyperactive Galaxies in the Early Universe
Even some galaxies may have been hyperactive youngsters. Looking almost 11 billion years
into the past, astronomers have measured the motions of stars for the first time in a very distant
galaxy. They are whirling at a speed of one million miles per hour-about twice the speed of our
Sun through the Milky Way. Even stranger, the galaxies are a fraction the size of our Milky Way,
and so may have evolved over billions of years into the full-grown galaxies seen around us today.
Astronomers are puzzled by how galaxies like these formed. They may be what will eventually
become the dense central regions of very large galaxies.
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