Pluto

A fourth moon of Pluto has been discovered using HST images. The moon, S/2011 P1, has a diameter estimated at 13 to 24 km diameter and is orbiting between the moons Nix and Hydra. More information is available in the 20 July 2011 news release

General Information

• Pluto Fact Sheet
• Frequently Asked Questions
• Reference Books on Pluto

Missions to Pluto

Future Missions

• New Horizons - Pluto Flyby, Kuiper Belt mission (2006)

Data

• Images of Pluto (Catalog of Spaceborne Imaging)
• Images of Pluto (NSSDC Photo Gallery)

Press Releases

• Fourth moon adds to Pluto's appeal - New Horizons News Release (20 July 2011)
• Plutoid chosen as name for Solar System objects like Pluto - IAU Press Release (11 June 2008)
• Pluto's redefinition as a "dwarf planet" - IAU Resolution (24 August 2006)
• Nix and Hydra - names chosen for Pluto's moons.
• Hubble Space Telescope discovers two new moons around Pluto.
• "New Horizons" mission chosen for flight to Pluto.
• "New Horizons" and "POSSE" - two missions chosen for feasibility studies.
• Pluto-Kuiper Express - NASA Flyby Mission to Pluto (Cancelled)
• New mission proposals solicited (20 Dec 2000)
• The Status of Pluto: A Clarification (3 February 1999)