Taurus–Littrow valley

Taurus–Littrow valley
National Aeronautics and Space Administration · Public domain · source
Name	Taurus–Littrow valley
Location	Moon, Mare Serenitatis
Coordinates	20.19°N 30.77°E
Region	Taurus Mountains, Littrow
Discovered	Selected 1969
Visited	1972 Apollo 17
Geology	Varied mare, highland massifs, volcanic features

Taurus–Littrow valley Taurus–Littrow valley was the landing site for Apollo 17, located on the southeastern rim of Mare Serenitatis near the Taurus Mountains and the Littrow crater. Chosen during the Apollo program as a target combining highland and mare geology, the site supported fieldwork by Eugene Cernan and Harrison Schmitt guided by Gene Cernan-era mission planners and Christopher C. Kraft Jr.-era flight controllers. The valley’s selection reflected priorities set by Thomas P. Stafford, Richard Nixon, and scientists from NASA and the Smithsonian Institution.

Overview and Geography

The valley lies between the massifs named the North Massif, South Massif, and the Sculptured Hills adjacent to Mare Serenitatis, near the Sea of Tranquility sector used by Apollo 11 and contrasted with sites like Mare Imbrium and Mare Tranquillitatis. Elevation differences link to features mapped by Lunar Reconnaissance Orbiter, Clementine, and earlier Lunar Orbiter missions. Proximal landmarks include Littrow crater, Stevinus crater, and rays traced to impact basins such as Mare Nectaris and Imbrium Basin. Cartographic work by the United States Geological Survey and imagery from Lunar Orbiter 4 supported traverse planning by teams at Johnson Space Center and Marshall Space Flight Center. The valley’s geomorphology was contextualized against regional frameworks used by researchers at California Institute of Technology, Massachusetts Institute of Technology, University of Arizona, and Brown University.

Geological Characteristics

Taurus–Littrow displays a juxtaposition of mare basalt deposits, highland massifs, and sculpted regolith with evidence of volcanism and impact cratering analogous to terrains studied by the Lunar and Planetary Institute and the Planetary Society. Stratigraphic relationships were interpreted using sampling strategies informed by work at Carnegie Institution for Science and analytical protocols from Geological Society of America. The valley hosts light mantle deposits near the Sculptured Hills, interpreted as mantling units comparable to deposits examined by teams from Caltech and Jet Propulsion Laboratory (JPL). Breccias and impact melt sheets link to basin-forming events like Nectarian and Imbrian epochs, a framework developed by investigators at Harvard University and University of Chicago. Remote sensing from Apollo Command Module photography complemented lunar sample petrography performed at facilities including Johnson Space Center curation labs and labs affiliated with Smithsonian Institution.

Apollo 17 Mission and Exploration

Apollo 17, crewed by Eugene Cernan, Harrison Schmitt, and Ronald Evans, conducted three Extravehicular Activities guided by CapComs from Mission Control Center (Houston) staffed by veterans like Gene Kranz and engineers from Grumman and North American Rockwell. The lunar module Challenger touched down near planned coordinates after trans-lunar injection and powered descent operations supervised by personnel from Rockwell International and Raytheon. Traverses used the Lunar Roving Vehicle procured from General Motors contractors, enabling sampling at stations named in mission reports and coordinated with scientists from NASA Ames Research Center and the Lunar Receiving Laboratory. Photographic documentation leveraged cameras by Hasselblad and spectrometers influenced by designs from Bell Labs and MIT Lincoln Laboratory. Mission timelines were shaped within the context of national priorities articulated by President Richard Nixon and executed by the National Aeronautics and Space Administration bureaucracy, with public outreach through United States Congress briefings and media coverage by outlets like The New York Times and BBC News.

Scientific Findings and Samples

Samples returned included mare basalts, highland breccias, orange soil, and exotic lithologies cataloged at the Smithsonian Institution National Museum of Natural History and curated at Lunar Sample Laboratory Facility. Petrographic and geochemical analyses conducted at universities such as Massachusetts Institute of Technology, Stanford University, California Institute of Technology, University of New Mexico, and laboratories at Johnson Space Center revealed ages consistent with the Late Heavy Bombardment models discussed in literature by Harvard-Smithsonian Center for Astrophysics researchers. The discovery of high-Ti and low-Ti basalts informed debates led by investigators at Carnegie Institution for Science and University of Hawaii regarding lunar mantle heterogeneity. The famed orange soil samples prompted studies in micromorphology by teams at University of California, Berkeley and University of Arizona, influencing hypotheses formulated at institutions including University of Oxford and Max Planck Institute for Solar System Research. Isotopic work from labs at Oak Ridge National Laboratory and Los Alamos National Laboratory refined chronology models, while mineralogical analyses from Smithsonian collaborators and Purdue University contributed to dynamical models by researchers at Caltech and Cornell University.

Post-mission Studies and Legacy

Long-term studies by projects using data from Lunar Reconnaissance Orbiter, SMART-1, and Kaguya (SELENE) built on Apollo 17 results, with research groups at Jet Propulsion Laboratory, European Space Agency, and Japanese Aerospace Exploration Agency contributing to mapping and geology. Educational outreach and commemoration by Smithsonian Institution, National Air and Space Museum, and universities like Case Western Reserve University sustained public engagement alongside analyses in journals such as Science (journal), Nature (journal), and Geochimica et Cosmochimica Acta. The mission’s legacy influenced astronaut selection and training protocols at NASA Johnson Space Center, international collaborations exemplified by International Space Station, and renewed exploration strategies by agencies including NASA's Artemis program and partners like European Space Agency and Roscosmos. Preservation debates over heritage sites invoked stakeholders including UNESCO and the United States National Park Service-affiliated historians, while geoscientific archives at Smithsonian Institution and data repositories at NASA Planetary Data System remain central to ongoing lunar science.

Category:Moon landing sites