The science community may be ecstatic over the discovery of a ninth planet, but the former planet "Pluto" had a totally different reaction. Hours after scientists announced there's solid evidence of ...

FLAGSTAFF – Clyde Tombaugh sat in the Orpheum Theater that fateful night in February 1930, waiting for clouds to pass before the 24-year-old astronomer could return to Lowell Observatory to confirm ...

Weitekamp, Margaret A., DeVorkin, David H., and Kidd, Diane. 2013. Pluto's Secret: An Icy World's Tale of Discovery. New York: Abrams Books for Young Readers.

New observations from NASA have revealed unexpected features on Charon, Pluto’s largest moon. The data suggests complex geological activity and surface processes that scientists did not expect to find ...