Astronomers believe they’ve detected an atmosphere around a tiny, icy world beyond Pluto

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 is thought to be the solar system’s smallest obj...

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