Loading ...
Sorry, an error occurred while loading the content.

Fwd = Mars Odyssey: Observation of large amounts of ice on Mars

Expand Messages
  • Frits Westra
    Forwarded by: fwestra@hetnet.nl (Frits Westra) URL: http://www.spaceref.com/news/viewpr.html?pid=7581 Original Date: Sat, 02 Mar 2002
    Message 1 of 1 , Mar 3 2:33 AM
    • 0 Attachment
      Forwarded by: fwestra@... (Frits Westra)
      URL: http://www.spaceref.com/news/viewpr.html?pid=7581
      Original Date: Sat, 02 Mar 2002 07:27:47 -0800

      ========================== Forwarded message begins ======================


      PRESS RELEASE
      Date Released: Friday, March 01, 2002
      University of Arizona

      Mars Odyssey: Observation of large amounts of ice on Mars

      Basis of observation:

      The evidence for large amounts of ice in the southern hemisphere of
      Mars comes from three different instruments in the Gamma-Ray
      Spectrometer (GRS) instrument suite on board the 2001 Mars Odyssey
      spacecraft: the Gamma Ray Sensor, the Neutron Spectrometer (NS), and
      the High-Energy Neutron Detector (HEND). Each of these instruments has
      detected the signal expected from a large amount of ice in the
      surface, or regolith, of Mars. The presence of ice is indicated by
      signals due to hydrogen, one of the major constituents of water, which
      has the chemical formula H[2]O. This formula signifies that water is
      made up of two atoms of hydrogen combined with one atom of oxygen. We
      determine the amount of hydrogen in the soil by two different
      techniques. One relies on the ability of hydrogen to slow down, or
      moderate, neutrons and the other relies on the fact that hydrogen can
      absorb a neutron and then emit a gamma ray of a specific and
      characteristic energy. We have seen both of these effects in the
      initial data from the Mars Odyssey GRS.

      ---[snip - FULL story at above URL]----

      ========================== Forwarded message ends ========================
    Your message has been successfully submitted and would be delivered to recipients shortly.