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We now offer the Cool It! card game in our Science Store. Cool It! is the new card game from UCS that teaches kids about the choices we have when it comes to climate change.
This image shows different classes of rocks explored by the Rover.
Click on image for full size
Image from: JPL/NASA

Classes of Martian Rock

Even though the rocks seem to be much the same, scientists can see three basic differences in these rocks. The three classes are:

  • dark,
  • bright, redder than the dark rock, but not at red as pink
  • pink, perhaps covered with a rusty substance

Different kinds of rock are pointed out in the image to the left. Green arrows show dark rocks, the white arrow shows pink rock. Barnacle Bill was a dark rock, suggesting that it may be an igneous rock. Scooby Doo was a pink rock.

Scientists are trying to figure out where the rocks came from, whether 1.) from the impact of a crater, or 2.) from flowing water.

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Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part by the National Science Foundation and NASA, our Founding Partners (the American Geophysical Union and American Geosciences Institute) as well as through Institutional, Contributing, and Affiliate Partners, individual memberships and generous donors. Thank you for your support! NASA AGU AGI NSF