Astronomers value the smallest galaxies for the clues they can provide about how galaxies form. But only those nearest to us are easily detectable. A neat technique has allowed one such object to be found at a large distance. See Letter p.341
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Schmidt, R. Distant dwarfs. Nature 481, 272–273 (2012). https://doi.org/10.1038/481271a
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DOI: https://doi.org/10.1038/481271a