{"thcode":2,"term":{"code":900,"name":"planetary bodies","parent":1174,"scope":"Large celestial masses of rock, metal, or gas orbiting around a star.  Use for extraterrestrial bodies."},"uf":[],"bt":[{"code":1174,"name":"topics","parent":1,"scope":"Themes, subjects, and concerns for which USGS information resources are relevant."},{"code":1,"name":"Categories","parent":null,"scope":"Thematic terms for categorizing information resources.  This thesaurus is intended to support finding and understanding scientific information."}],"nt":[{"code":730,"name":"meteorites","parent":900,"scope":"Masses of rock or metal from space that reach the earth's surface without burning up.  Use for 'meteors' or 'meteoroids' as well as 'meteorites'. USGS is more likely to have information about 'meteorites' since these are objects found on the earth."}],"rt":[{"code":1718,"name":"impact cratering","parent":101,"scope":"Impact of extraterrestrial objects such as asteroids, comets, and meteorites on Earth."},{"code":901,"name":"planetary sciences","parent":1019,"scope":"Scientific study of the solid bodies of the solar system, including planets, moons, asteroids, meteorites, and interplanetary materials."}]}