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Mars Exploration Rover (MER) Missions Interview with
NASA Ames Research Center planetary geologist Jeff Moore

Recorded January 8, 2004, at NASA Ames Research Center, Moffett Field, Calif.

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Full Transcript (below)


5.What does a spectrometer do? (57 SECONDS)

Jeff Moore: "Well, as I think many people know, that light breaks down into many colors. That’s how one gets rainbows. And a very large rainbow projected on a wall – one can walk up and see there are a number of small, bright and dark lines in it. And these bright and dark lines are the unique signature, if you will, of the various elements that, uh, are involved in the radiation of that light. So, for instance in the case of a rainbow, you see the materials which are either being irradiated by the sun, or the materials in which the sunlight is passed through before it strikes – ah – the prism. So, in a sense, spectroscopy is the ability to see the unique signatures of minerals and elements based upon the specific wavelengths in which they broadcast or don’t broadcast in.”

Multimedia Archive | MER Missions with Jeff Moore