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Web Extra: Pluto probe promises spectacular surprises

A faint ball of subtle features when viewed from Earth, Pluto will sharpen to crystal clarity when New Horizons flies past in July.
RELATED TOPICS: PLUTO | NEW HORIZONS
Pluto, New Horizons
Eighty-five years after American astronomer Clyde Tombaugh discovered Pluto, planetary scientists eagerly await their first close-up views of this enigmatic world. From Earth, the distant planet spans barely 0.1 arcsecond — at the limit of resolution even with the mighty Hubble Space Telescope. It’s no wonder that our knowledge of Pluto has come in fits and starts, gained through painstaking observations that stretch the latest technology to its limits.

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