In addition to the planetary data which we have archived at the PRPDC, there are many excellent data sources on-line. If you are searching for images (or videos) that you can download, we recommend the following sites:
General Image Search
US Geological Survey Pilot Site, USGS Flagstaff
Mercury
LOLA topography of Northern Hemisphere, NASA
Mariner 10, Jet Propulsion Laboratory
MESSENGER Mission Site, (MErcury Surface, Space ENvironment, GEochemistry, and Ranging), The John Hopkins University
Venus
Magellan, U.S. Geological Survey, Flagstaff
Topographic map of Venus, Lunar Planetary Institute
Venus Express, European Space Agency
Earth
Gateway to Astronaut Photography of Earth, Johnson Space Center
Landsat, U.S. Geological Survey, Sioux Falls
NASA Earth Observatory, NASA
Earth's Moon
Apollo 15, 16, and 17 image archive, Arizona State University
Clickable map for Apollo and LROC images, Arizona State University
Clementine, U. S. Geological Survey, Flagstaff, Map-a-Planet: Explore the Earth's Moon.
Kaguya (SELENE), Japan Aerospace Exploration Agency, 2007 - 2009.
Kaguya (SELENE) High resolution topography, MIT.
Lunar Crater Observation and Sensing Satellite (LCROSS) images, University Washington PDS
LOLA topographic images, NASA Goddard Space Flight Center
Lunar Orbiter Frames, U.S. Geological Survey, Flagstaff, Arizona
Lunar Reconnaissance Orbiter Camera (LROC), Arizona State University
Lunar Reconnaissance Orbiter Mini-RF Radar mosaics , PDS Geoscience Node
Ranger Images, Lunar and Planetary Institute, Houston
SMART-1, European Space Agency
Mars
Context Camera (CTX), Arizona State University
Curiosity Rover - Press release images, Jet Propulsion Laboratory
Curiosity - Raw images, Jet Propulsion Laboratory
Curiosity - Searchable Traverse Map, University of Washington PDS
Compact Reconnaissance Imaging Spectrometer for Mars (CRISM), The John Hopkins University
Global maps, including Thermal Emission Spectrometer (TES) data, Arizona State University
High Resolution Imaging Science Experiment (HiRISE), University of Arizona
High Resolution Imaging Science experiment (HiRISE), Arizona State University
Mars 3-D (anaglyphs). Various missions, Jet Propulsion Laboratory
Mars Express, European Space Agency
Mars Orbiter Camera (MOC), Arizona State University
High Resolution Stereo Camera (HRSC), Arizona State University
Mars Odyssey, Jet Propulsion Laboratory
Mars Odyssey Videos, Jet Propulsion Laboratory
Mars Orbiter Camera, Malin Space Sciences Systems
Mars Pathfinder, Jet Propulsion Laboratory
MOLA topography of Mars, NASA Goddard Space Flight Center
Opportunity Rover - Raw images, Jet Propulsion Laboratory
Opportunity Rover - Searchable Traverse Map, Univ. Washington PDS
Phoenix Lander, University of Arizona
Spirit Rover - Raw images, Jet Propulsion Laboratory
Spirit Rover - Searchable Traverse Map, University Washington PDS
Thermal Emission Imaging System (THEMIS), Arizona State University
Viking Lander 1, Jet Propulsion Laboratory
Viking Lander 2, Jet Propulsion Laboratory
Viking Orbiter, Arizona State University
Jupiter
Galileo, NASA Headquarters
Voyager, Jet Propulsion Laboratory
Saturn
Cassini images of Saturn's moons, Jet Propulsion Laboratory
Voyager, Jet Propulsion Laboratory
Uranus
Voyager, Jet Propulsion Laboratory
Neptune
Voyager, Jet Propulsion Laboratory
Dwarf Planets
Dawn - Vesta and Ceres, The John Hopkins University
New Horizons - Pluto, The John Hopkins University
Asteroids and Comets
NEAR - Eros, The John Hopkins University
Rosetta - Comet 67P, European Space Agency