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