| 31. | Instruments aboard the Global Surveyor show for the first time how the slopes of the polar cap vary.
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| 32. | If CO 2 hydrates are present in the Martian polar caps, as some authors suggest ( e . g.
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| 33. | Polar cap thus provides a vantage point for the study of energy exchange between the solar wind, magnetosphere and ionosphere.
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| 34. | Most of the CHAIN instruments are located within the polar cap defined as a region of open magnetic field lines.
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| 35. | Telescopes, even small ones, will allow you to see detail on Mars, including a polar cap and other surface features.
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| 36. | But those who looked through a more powerful telescope said they could make out the polar cap on one side.
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| 37. | This opportunity to land at the polar cap gives us a chance to learn and witness life in Arctic conditions.
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| 38. | The OGO-6 observations of a bright scattering layer over the polar caps were identified as poleward extensions of these clouds.
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| 39. | Space probes showed that the polar caps of Mars contain water, not simply carbon dioxide, as many scientists had assumed.
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| 40. | But scientists believe that the fringes of the polar cap, and the soil beneath it, may contain water ice as well.
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