为什么引力在太空和在地球上一样?Why Is Gravity in Space Not the Same as Earth?Every object in the universe pulls on every other object. This is called gravitation, or gravity. But the strength of that pul
“another brust of interest in space”是“突然爆发一阵对太空的兴趣”的意思这里another是新的意思 意思应该是重燃兴趣1赞·70浏览in space that is outer to it?in space that is outer to it? 在外层空间吗? in space that
Extra-vehicular activity (EVA) is work done by an astronaut away from the Earth and outside of a spacecraft. The term most commonly applies to an EVA made outside a craft orbiting Earth (a spacewalk)
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