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  1. How Do We Communicate With Spacecraft? We Asked a NASA Expert

    How Do We Communicate With Spacecraft? We Asked a NASA Expert

    56
  3. How Do We Know What Earth's Climate Was Like Long Ago? We Asked a NASA Scientist

    How Do We Know What Earth's Climate Was Like Long Ago? We Asked a NASA Scientist

    28
  4. What's Going on with the Hole in the Ozone Layer? We Asked a NASA Expert

    What's Going on with the Hole in the Ozone Layer? We Asked a NASA Expert

    14
  5. Why Does the Moon Look Larger at the Horizon? We Asked a NASA Expert

    Why Does the Moon Look Larger at the Horizon? We Asked a NASA Expert

    49
  6. What's Going on with the Hole in the Ozone Layer? We Asked a NASA Expert

    What's Going on with the Hole in the Ozone Layer? We Asked a NASA Expert

    4
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    11
  7. Do Robots Help Humans in Space? We Asked a NASA Technologist

    Do Robots Help Humans in Space? We Asked a NASA Technologist

    156
  8. How Will We Extract Water on the Moon? We Asked a NASA Technologist

    How Will We Extract Water on the Moon? We Asked a NASA Technologist

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    4
  10. What's Going on with the Hole in the Ozone Layer? We Asked a NASA Expert

    What's Going on with the Hole in the Ozone Layer? We Asked a NASA Expert

    6
  11. How Long Does it Take to Get to the Moon... Mars... Jupiter? We Asked a NASA Expert

    How Long Does it Take to Get to the Moon... Mars... Jupiter? We Asked a NASA Expert

    60
  12. What's Going on with the Hole in the Ozone Layer? We Asked a NASA Expert

    What's Going on with the Hole in the Ozone Layer? We Asked a NASA Expert

    11
  14. How Will We Extract Water on the Moon? We Asked a NASA Technologist

    How Will We Extract Water on the Moon? We Asked a NASA Technologist

    9
  15. Do Robots Help Humans in Space? We Asked a NASA Technologist

    Do Robots Help Humans in Space? We Asked a NASA Technologist

    3
  16. Are There Earthquakes on Other Planets? We Asked a NASA Expert

    Are There Earthquakes on Other Planets? We Asked a NASA Expert

    6
  17. Do Robots Help Humans in Space? We Asked a NASA Technologist

    Do Robots Help Humans in Space? We Asked a NASA Technologist

    3
  18. How Will We Extract Water on the Moon? We Asked a NASA Technologist

    How Will We Extract Water on the Moon? We Asked a NASA Technologist

    6
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    10
    6
  20. How Will We Extract Water on the Moon? We Asked a NASA Technologist

    How Will We Extract Water on the Moon? We Asked a NASA Technologist

    3
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    75
  21. Do Robots Help Humans in Space? We Asked a NASA Technologist

    Do Robots Help Humans in Space? We Asked a NASA Technologist

    6
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    12
    6
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