Geza Gyuk, Adler Planetarium director of astronomy, says gravity is everywhere."There isn't any place in the universe where there isn't at least some gravity," Gyuk said.The force of the Earth's gravity on an object can be calculated using the distance that object is from the center ...
解析 A。这题考查词汇辨析与太空基地科学原理。“rotating”(旋转)可用于描述太空站自身旋转来产生人工重力这一原理。“revolving”通常指围绕其他物体公转;“spinning”更多强调快速旋转,比较口语化;“circling”侧重于绕圈,没有“rotating”准确表达太空站产生人工重力的方式。
Going to the bathroom while floating in space can be tricky. Gravity is very weak in space, meaning toilets cannot flush (冲刷) the same way that they do on Earth. In a new contest, NASA is asking inventors from around the world to develop a new space toilet. The space agency is look...
unveiled Haven-2 — the proposed successor to the International Space Station (ISS) and the next step in the company’s vision to pioneer a path to long-term living and thriving in space.
It is possible to yo-yo in space, although you need to make some adjustments due to the lack of gravity; however, many of the other forces that apply to yo-yoing on Earth are still present in outer space!
阅读理解 Can you imagine spacemen's everyday life in space? They also need to eat, sleep, exercise and relax.They do the same things as us, but they do them differently. On Earth, we put food on a plate.Gravity(重力)
【题目】T here's no gravity (重力) in space, so we can fl oat around in the spaceship. We'll have to tie (绑) o urselves to our beds, so that we won't float away in our sleep. In space, our bodies may get weak(虚弱的),___ we'll have to do exercise every day. A...
8. An astronaut can(漂浮) in outer space because of the low gravity.9. People can't breathe in space because there is no o10. Amy made such r progress that her teacher praised her in front of the whole class.11. There are always too many people in this market at weekends. So it...
5.Can you imagine(想象) spacemen's everyday life in space?They also need to eat,sleep,exercise and relax.They do the same things as us,but they do them differently.On Earth,we put food on a plate.Gravity(重力) holds the food down and keeps it on a place.But there is almost no ...
But in a spacecraft this is not the case. Here there is no gravity which is why we so often see pictures of astronauts floating around. This means that strangely when you cry your tears have nowhere to go. As a result they just stick to your eyes....