Astronomers have found five Cepheids (yellow dots at top) on the other side of the galaxy.
Credit: Spiral map: NASA/JPL-Caltech/R. Hurt, SSC-Caltech (base image); Ariel Weiss (Cepheid positions)
A single Hubble Space Telescope image can capture scores of distant galaxies, but the one galaxy we'll never see from the outside is our own.
From Scientic American
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