太空旅行英语作文100字？in the future.我想去太空旅行。但是去太空旅行很困难费用也会很贵。如果我能去太空旅行，我将会为此而兴奋不已，因为去了太空，我可以看到我们美丽的地球还有很多漂亮的星星。我希望在未来的某一天能够实现去太空旅行的梦想。那么，太空旅行英语作文100字？一起来了解一下吧。
以space为主题的英语作文
I would like to travel in space.it is very hard to travel in space and the ticket is too expensive to buy.I will be very excited if i can go to the space because I can see the beautful earth from the space and I can see a lot of other stars,too.I wish i can travel in space in the future.
英文星空优美句子
Our physiological journey into space actually begins several days before launch. To avoid last minute exposure to colds and flu, you and your crew mates have been in partial isolation at Kennedy Space Center. During isolation, you have gradually adjusted your circadian rhythm to match the sleep-rest cycle required for the mission.
Now, a rookie astronaut, you have already boarded the Space Shuttle Orbiter and, dressed in an orange launch and entry suit, lie in a reclined position strapped into one of the middeck seats. The change in your orientation with respect to gravity produces a headward fluid shift. During launch, you experience as much as 3 Gs of acceleration, but the reclined position preserves blood flow to your brain and you remain conscious and alert throughout the nine minutes it takes to reach orbit.
On entry into weightlessness, the lack of a hydrostatic gradient causes a continuation of this headward fluid shift, leading to puffiness of your face and a feeling of fullness in your head. Your body perceives this fluid shift as excessive fluid volume. To get rid of the excess fluid, sodium excretion is increased leading to increased urine flow. In addition, stimulation of the hypothalmic receptors reduces thirst and so you drink less water.
Transitioning from Earth's gravity to weightlessness disrupts your body's spatial orientation and posture control systems. You experience disorientation and motion sickness during the first few days in space. You also find that the lack of regular 24 hour cycles of light and dark disrupts your circadian rhythm. Combined with a busy work schedule, cramped quarters and the other physiological stresses, which disrupts your sleep patterns and you lose about 2 hours of sleep a day for a short duration space mission.
Your mission, however, is long-duration and involves a three month stay on the International Space Station.After a month of weightlessness, additional changes in physiological systems begin to become apparent as you are fully adapted to the microgravity environment. You now get around using mostly your arms and you don't need to use your legs to support the weight of your body. The reduced work load on weight-bearing muscles leads to muscle wasting (or atrophy) with an associated strength loss that could be 30% to 40%. The small forces used to get around require reduced gross muscle activity and increased fine muscle activity leading to a conversion of muscle fibers from slow twitch type to fast twitch type. Measurements of astronaut intravehicular activity (IVA) reveals average force magnitudes of 9 N (2 lb) with maximum lods of 60 N (13.5 lb). Your heart no longer has to pump blood against the pull of gravity and the reduced load leads to atrophy of your heart muscle. Lack of weight bearing also reduces stress levels in your bones leading to bone breakdown and release of calcium. Loss of bone mineral density at a rate of 12% per month in critical areas significantly reduces the strength of your bones.
Through some combination of factors, your immune system gets weaker, and you realize that you are now more prone to infection and perhaps even at risk for reactivation of latent viruses.
These profound changes in your body in response to the weightless environment can pose serious health risks upon return to Earth. For most physiological systems, your body readapts to the 1-g environment, although often at a slower rate than on entry into weightlessness. You might experience orthostatic intolerance brought on by the hydrostatic gradient and a reduced fluid volume. Your muscle strength will probably return to normal within 4-8 weeks. Your bone mass should also recover within approximately 8 months or a year, but may never recover it's original strength for the same amount of mass. You may also encounter difficulties with postural equilibrium due to weightlessness induced changes to your neurovestibular system.
Research needs to be performed to assess astronaut performance for long-duration space missions with particular emphasis on developing countermeasures to spaceflight-induced deconditioning. Pre-, inflight, and postflight investigations of astronauts exposed to long-duration space flight aboard the International Space Station will help answer the question of what are the basic mechanisms underlying adapation to microgravity. This information has implications for future countermeasure interventions. If long-duration space flight leads to general deterioration in astroanut performance then inflight countermeasures that enhance performance can be envisioned. Some combination of exercise, medication, and perhaps, artificial gravity, will be prescribed as countermeasures for long-duration space missions, especially for future missions to the moon or Mars.
英语太空手抄报内容
Space tourism is based on the ideal people to travel into space, into space to travel, giving an unprecedented experience to provide the latest and most surprising is that it can stimulate the person watching the space charming scenery, but also can enjoy the taste of weightlessness. Both of which experience can be enjoyed only in space, we can say that only the sky Cijing. Space travel project started in April 30, 2001. The first space tourists, American businessman Dennis Tito, the second space tourist to the South African millionaire Mark - Shuttleworth, the third space tourist Gregory Olsen, an American. Experts say the future of space tourism will show a mass, project diversification, companies competition and improve the four major trends in safety regulations.太空旅行是基于人们遨游太空的理想，到太空去旅游，给人提供一种前所未有的体验，最新奇和最为刺激人的是可以观赏太空旖旎的风光，同时还可以享受失重的味道。
杨利伟英语作文80字简单
Space travel
Space travel is ideal for people to travel in space. Space travel gives people a hitherto unknown experience. The most novel is that you can enjoy the beautiful scenery of space. At the same time you also can enjoy the taste of weightlessness. In the near future, People may go to space travel.
Advantages of space travel is as follows.
1.space travel provides a new space for human living
2. To provide people with new energy
3. To help people better understand the universe
4. Space research is good for other areas
Although Space travel is beautiful It has disadvantages.
At first it costs too much. Secondly the idea of Human live on other planets is unrealistic.At last Space travel is dangerous.
As for me, all these problems will certainly be solved Step by step. A much better and brighter future waits for us.
太空旅行是基于人们遨游太空的理想, 太空旅行给人一种前所未有的体验, 最新奇的是你可以观赏太空美丽的风光，同时还可以享受失重的味道。
太空旅行记读后感
Travel
A succession of beautiful scenery makes one feel delighted. A long stay in the same surroundings to make everything the same. Routine work often makes one feel bored But if you take a trip or a long journey on your holidays to some scenic spots or historic sites, that will make great difference.
Travel can widen one’s knowledge. The farther you go, the more you will learn about different politics, economics, customs as well as geography. If you travel the whole world some day, you will fully understand the globe on which we live.
However, too much travel causes tiredness. You get on a bus or a taxi, you travel on the train or in a plane, being patient with the hours needed on your mute from one place to another, that will make you exhausted after a while.
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