A glimpse of cosmic dawn

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Science  07 Nov 2014:
Vol. 346, Issue 6210, pp. 688-691
DOI: 10.1126/science.346.6210.688

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They may be the strangest looking telescopes on Earth—just scattered arrays of simple antennas, some resembling robot spiders, others bizarre garden furniture. These otherworldly instruments—one in Northern Europe, one in South Africa, a third in Australia—have an otherworldly target. They are probing a time so far back in the universe's history that there was very little to see: just a few of the very earliest stars and galaxies. And their quarry is not the scattered points of light at that early epoch, but the diffuse ocean of gas between them when it was in a process of transformation.

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