| 1. | The study itself will examine how polymer droplets behave in weightlessness.
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| 2. | The filming was done during 20-second bursts of weightlessness.
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| 3. | It takes both their energies to create the illusion of weightlessness.
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| 4. | Weightlessness allows the spine to stretch, often causing back pain.
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| 5. | He's also regained the muscle he lost in weightlessness.
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| 6. | They will study the effects of weightlessness on the human body.
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| 7. | He has extensive experience in test work under simulated weightlessness conditions.
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| 8. | Experiments focused on the effect of weightlessness on various physiological parameters.
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| 9. | Weightlessness actually occurs because orbiting objects are in free-fall.
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| 10. | :Guys, you have forgotten weightlessness in a falling elevator.
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