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  • Cosmic radio waves mimic chirping of 'alien birds'

  • CAPE CANAVERAL, Fla. (AP) — Twin spacecraft have captured the clearest sounds yet from Earth's radiation belts — and they mimic the chirping of birds.

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    • CAPE CANAVERAL, Fla.
    By MARCIA DUNN,AP Aerospace Writer
    Updated Dec. 4, 2012 @ 3:51 pm
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