Jet Propulsion Laboratory JPL Earth JPL Solar System JPL Stars and Galaxies JPL Science and Technology Odyssey Home NASA Home Page Jet Propulsion Laboratory California Institute of Technology Follow this link to skip to the main content
Jet Propulsion Laboratory
+ NASA Homepage
+ NASA en Español
+ Marte en Español
Search Mars
Go Search
2001 Mars Odyssey
Overview Science Technology The Mission People Features Events Multimedia
Mars for Kids
Mars for Students
Mars for Educators
Mars for Press
+ Mars Home
+ Odyssey Home
Latest Images
Engineering Diagrams
Polar Ice Caps
Water Features
Martian Terrain
Dust Storms
Sand Dunes
Mars Artwork
Latest Images

Global Map of Thermal Neutrons
Larger Images

Global Map of Thermal Neutrons

Observations by NASA's 2001 Mars Odyssey spacecraft show a global view of Mars in low energy, or thermal, neutrons. Thermal neutrons are sensitive to the presence of hydrogen and the presence of carbon dioxide, in this case "dry ice" frost. The red area at the top of the map indicates that about one meter (three feet) of carbon dioxide frost covers the surface, as it does every Mars winter in the polar regions. Soil enriched by hydrogen is indicated by the deep blue colors on the map, which show a low intensity of thermal neutrons. An enhancement of thermal neutrons close to the south pole, seen as a light green color, indicates the presence of residual carbon dioxide in the south polar cap, even though the annual frost dissipated from that region during southern summer.

NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Office of Space Science, Washington, D.C. Investigators at Arizona State University in Tempe, the University of Arizona in Tucson, and NASA's Johnson Space Center, Houston, operate the science instruments. The gamma-ray spectrometer was provided by the University of Arizona in collaboration with the Russian Aviation and Space Agency, which provided the high-energy neutron detector, and the Los Alamos National Laboratories, New Mexico, which provided the neutron spectrometer. Lockheed Martin Astronautics, Denver, is the prime contractor for the project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena.

Credit: NASA/JPL/University of Arizona/Los Alamos National Laboratories

JPL Image Use Policy

Credits Feedback Related Links Sitemap