Sharon Christa McAuliffe received a preview of microgravity during a special flight aboard NASA's KC-135 "zero gravity" aircraft.

Sharon Christa McAuliffe受邀对美国宇航局的KC-135型模拟“零重力”飞行器进行测试。

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They were special points between the earth and the moon where the gravity influence between the earth and the moon were the same.

它们是地球和月球之间的一些特殊点，在那里，地月之间的引力效应是一样的。

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It is to move into an orbit 217 miles (350 kilometers) above Earth and conduct surveys of Chinese farmland using special cameras, along with experiments involving growing crystals in zero gravity.

它将要进入位于地球上空217英里(合350公里)处的轨道，使用特制相机来调查中国的农业用地，并将展开实验以在零重力下制造水晶。

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Strength training can involve a number of approaches including using free weights, such as dumbbells or barbells, resistance or elastic bands that allow you to flex using your arms and legs, as well as ankle weights or vests and other special exercises that use your body weight to simulate resistance against gravity.

FORBES: Why Strength Training May Help You Live Longer

The flights will be conducted by a DC-8 outfitted as a special airborne laboratory with laser mapping instruments, ice-penetrating radar and gravity instruments.

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The complement of special moves is also spectacular, with a level of variation that makes almost any gravity-defying trick possible.

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