A new study suggests that a tiny, icy world beyond Pluto harbors a thin, delicate atmosphere. It's believed to be the smallest object yet with a clearly detected global atmosphere. CAPE CANAVERAL, Fla. (AP) — A new study suggests that a tiny, icy world beyond Pluto harbors a thin, delicate atmosphere that may have been created by volcanic eruptions or a comet strike. Just 300 miles (500 kilometers) or so across, this mini Pluto... [2521 chars]
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