Write a short paragraph about how astronauts are trained.
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9 tháng 3 2023
When there is breaking new about a typhoon, To be safe please do all this step for your live. First, plan with your parents about where to evacuate to, if you are outside, get inside your house now. Second, keep small outdoor objects, or light and sharp items from blowing away and may harming people. Third, if you are a kid or a child, ask your parent what you can do to help prepare your house. Finally, make sure to listen for safety and storm update. There simple four step can help you, remember that.
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5 tháng 11 2021
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Our environment is currently severely polluted by the waste generated by human activities that are released into the environment. In terms of books, everyone knows the importance of the environment for human life: air, water, ... Recently, people have been able to apply some methods and typically reduce Minimize use of food bags that use banana leaves to reduce environmental pollution. To make the air cleaner, people should take a bus or bicycle to minimize the amount of smoke emitted by the air to pollute the air. And in the measures, the use of recycled items is quite common: reusable plastic bottles, paper, ... to make everyday items.
Do people feel the environment is heavily polluted? Because of a green environment - clean and beautiful, each contributes a little bit of energy to protecting the environment.
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13 tháng 9 2018
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Most of the common people never realize the importance of being healthy and fit. They generally underestimate the importance of good health as they never know the advantages of it. We all know that health is wealth but only few people follow it in their life. Being healthy and fit, helps us in carrying out our daily tasks. Being healthy is not only a body free of diseases, but it also means to have a tensionless mind. If a person has unhealthy mind, he cannot has an unhealthy body. Good health of both, body and mind helps us to get success in life and enjoy it in full extent. Good mental health makes us feel like a wellbeing and healthy body gives us physical strength and confidence. Good physical health helps us in our trouble times whereas poor physical becomes more weak and prone to diseases.
We need to be aware about all the points of how to keep us healthy both physically and mentally. Some people know well about how to keep their body neat, clean and healthy however they carry some tensions in their mind, so they always lack of being fit. Mental tension gradually deteriorates the good condition of body and makes it weak. People, who are serious about their health and fitness, do exercises on daily basis and eat healthy food in timely manner. They are much conscious about their health and avoid being lazy, eating unhealthy food and sedentary life.
The most exciting day for anyone who wants to travel into space is the day he or she is selected to be an astronaut candidate. Then the real work begins. It can take up to two years of training to become a fully qualified astronaut. Candidates must learn the basics of the Space Shuttle and the International Space Station. They must also learn how to be part of a team by flying the NASA T-38 training jets.
Astronauts also take classes. They must learn many things besides science. They also learn about medical procedures. Many times, they have to give speeches, so they take public speaking classes. In order to be prepared for any emergency, astronauts take survival training.
If you are going to be a crew member on the ISS, you will also have to take language classes. You will need to be able to talk with the Russian Mission Control Center.
Space Vehicle Mock-up Facility
Image to left: In the Space Vehicle Mockup Facility, astronauts practice what they will be doing in space. Credit: NASA
In order for astronauts to get a feel for what they will be doing in space, they practice on life-sized models. These models are called "mock-ups." The Space Vehicle Mock-up Facility (SVMF) is where they practice. In the SVMF, astronauts practice using the Space Shuttle Orbiter and parts of the ISS. In these mock-ups, astronauts will learn how they will move about.
Preparing for Microgravity
How do astronauts practice for being in space? There are many things to learn about being in the almost weightless condition known as microgravity.
KC-135
Image to right: Astronauts feel weightless for a short time in the KC-135. Credit: NASA
This plane is also known as the Weightless Wonder or Vomit Comet. It provides about 20-25 seconds of zero gravity. For this brief amount of time, astronauts feel weightless. Sometimes, even experienced astronauts get sick in the KC-135. That is where it gets one of its names.
The Precision Air-Bearing Floor
Image to left: Astronauts learn how to move large objects in space using The Precision Air-Bearing Floor. Credit: NASA
One part of an astronaut's work may include moving large objects in space. This can be easy because there is no friction to push against. But, this also makes the job hard. There is no friction to make the large objects stop! They could float and float and float.
The Precision Air-Bearing Floor allows astronauts to move huge objects as they might in space. It is a large, smooth metal floor. The large objects have air forced through them. It is like a large air hockey table.
The Neutral Buoyancy Laboratory
Image to right: Astronauts use the Neutral Buoyancy Laboratory to practice extravehicular activities. Credit: NASA
To practice extravehicular activities, or space walks, astronauts go underwater. The astronauts use the Neutral Buoyancy Laboratory (NBL), a huge "swimming pool." The NBL pool is 62 meters (202 feet) in length, 31 meters (102 feet) in width and 12 meters (40 feet) in depth. The pool holds 22.7 million liters (6.2 million gallons) of water.
Astronauts float in the water while they practice on full-sized models of space vehicles. They may spend up to seven hours at a time under water.
Although astronaut candidates may have their college degrees, school is just beginning for them when they are selected. There is still much to learn.