Planets in the Yahoo! Directory

Nine Planets, The
Multimedia tour of the solar system -- one star, eight planets, and more -- with pictures, text, sound, and references to other resources.
www.nineplanets.org
NSSDC Planetary Fact Sheets
Directory of fact sheets for planets and their planetary systems from the National Space Science Data Center, NASA.
nssdc.gsfc.nasa.gov/planetary/planetfact.html
NASA/JPL Planetary Data System (PDS)@
Learn about the Planetary Data System (PDS), the archive which stores and distributes digital data from past and present NASA planetary missions, astronomical observations, and laboratory measurements. Sites feature planetary photojournal, image atlas, image node, data community, and data search services.
dir.yahoo.com/.../Jet_Propulsion_Laboratory__JPL_/Planetary_Data_System__PDS_
Welcome to the Planets
A collection of many of the best images from NASA's planetary exploration program.
pds.jpl.nasa.gov/planets
Department of Planetary Sciences Lunar and Planetary Laboratory - University of Arizona@
Learn about the Department of Planetary Sciences Lunar and Planetary Laboratory under the University of Arizona which is dedicated to the teaching and understanding of the formation and evolution of the planetary system. Sites feature NASA's 2008 Mars mission, volcanic studies of Io and Mars, Galileo spacecraft Solid State Imager (SSI) data analysis, and investigation into the collisional evolution of the solar system.
dir.yahoo.com/.../College_of_Science/Department_of_Planetary_Sciences_Lunar_and_Planetary_Laboratory
NASA Regional Planetary Image Facilities (5)
Explore NASA Regional Planetary Image Facilities, the network of planetary image libraries of the inner planets and their satellites including lunar and planetary photographic materials, cartographic materials, geologic maps, mission documentations, journals, books, and slides that serve the planetary research and education community across the world.
dir.yahoo.com/.../Planets/NASA_Regional_Planetary_Image_Facilities
Planetary Science Research Discoveries
An educational site devoted to sharing the exciting discoveries being made in planetary science by NASA-sponsored researchers.
www.psrd.hawaii.edu/index.html
Building Planets at PSI: The Origin of the Solar System
Using a computer model to study the process of planetesimal accretion.
www.psi.edu/projects/planets/planets.html
Planetary Rings Node
Responsible for restoring, archiving, and publishing datasets describing planetary ring systems. All of the relevant datasets aquired from previous and future spacecraft, as well as from Earth-based observatories.
pds-rings.seti.org
GISS Institute on Climate and Planets
A collaboration between the Goddard Institute for Space Studies, CUNY, and NYC public schools providing students and faculty with opportunities in current NASA climate and planetary research.
icp.giss.nasa.gov
Wikipedia: Planet
Body of considerable mass that orbits a star and that doesn't produce energy through nuclear fusion. Offers an introduction to the planets of our solar system, related objects, and extrasolar planets.
en.wikipedia.org/wiki/Planets
Exploring Planets in the Classroom
More than 25 hands-on science activities are provided in classroom-ready pages for both teachers and students for exploring Earth, the planets, geology, and space sciences.
www.spacegrant.hawaii.edu/class_acts/index.html
Planetary Astronomy @ Caltech
Includes descriptions of the research group's work, people, and activities.
www.gps.caltech.edu/~pa
USGS Astrogeology Research Program
Including a compendium of the system of naming planets and planetary systems including detailed images and data to support the nomenclature. From the USGS astrogeology research program.
astrogeology.usgs.gov/SolarSystem
What Is a Planet?
Scientific American article looks at the controversial new official definition of "planet," which banished Pluto, and that has its flaws but by and large captures essential scientific principles.
www.sciam.com/article.cfm?chanID=sa006&colID=1&articleID=93385350-E7F2-99DF...
And Then There Were Eight: IAU Vote Shakes Up the Solar System
Planetary Society article about the International Astronomical Union's (IAU) new definition of a planet that strips Pluto of its planetary status, leaving us with eight classical planets.
www.planetary.org/explore/topics/pluto/new_solarsystem.html
Final IAU Resolution on the Definition of "Planet" (PDF)
Read the IAU resolutions that define what a "planet" is in our solar system and that create a new class of objects called plutonian objects.
www.iau.org/static/resolutions/Resolution_GA26-5-6.pdf
Planets.net
Planet information, including physical characteristics, exploration, news, photos, videos, and discussion forums. Site also features basic facts about other objects and phenomena in the solar system.
www.planets.net
The Great Planet Debate: Science as Process
Scientific conference and educator workshop that will explore the basic, but controversial, question: What is a planet? Johns Hopkins University, Maryland; August 14-16, 2008.
gpd.jhuapl.edu/index.php