Planet Pluto

Today in Astronomy History
courtesy of astroplanet.info

July 4, 1054
Chinese astronomers record a bright supernova later to become the Crab Nebula (M1).

July 4, 1968
Radio astronomy satellite Explorer 38 is launched.

July 4, 1997
NASA's Pathfinder probe lands on Mars

July 4, 2005
Comet Tempel 1 collides with the "Deep Impact" probe

...also in Astronomy Today
courtesy of astroplanet.info

July 4, 2009
Earth reaches Aphelion

July 4, 2009
Mercury disappears into the glare of the morning Sun.

July 4, 2009
Venus passes less than 7° of the asterism Pleiades (M45)

Welcome to The Planet Pluto Website
A website about the planet Pluto

Pluto is usually the ninth planet from the Sun although it is sometimes 8th when Pluto moves within Neptune's orbit. Pluto's diameter is 2,300 km and takes 249 years to orbit the Sun. Pluto is named after the Roman god of the underworld. Pluto was discovered on February 18, 1930 by Clyde Tombaugh.