• Ancient galaxy's spin suggests universe's first stars quickly coalesced into disks

    1 month ago - By Science Mag

    Astronomers have detected the rotation of a galaxy dating back to just 550 million years after the big bang, when the universe was 4% of its current age. The rotation suggests this baby galaxy was not an amorphous blob but rather an organized disk, just like the Milky Way and similar galaxies that have had more than 13 billion years to mature. It's yet more evidence that galaxies grow and evolve faster than theorists had expected.
    Stars coalescing into a disk so early on doesn't counter existing theories, but it does stretch them, says Sarah Bosman of the Max Planck Institute for...
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  • Capturing the onset of galaxy rotation in the early universe

    Capturing the onset of galaxy rotation in the early universe

    1 month ago - By Phys.org

    As telescopes have become more advanced and powerful, astronomers have been able to detect more and more distant galaxies. These are some of the earliest galaxies to form in our universe that began to recede away from us as the universe expanded. In fact, the greater the distance, the faster a galaxy appears to move away from us. Interestingly, we can estimate how fast a galaxy is moving, and in turn, when it was formed based on how "redshifted" its emission appears. This is similar to a phenomenon called the Doppler effect, where objects moving away from an observer emit the light that...
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