What is the space for writing a composition?

1. What's space like? My space dream has been full of longing for the vast universe since ancient times.

"Shenzhou VII" manned space flight will realize spacewalk for the first time. Give China a space dream! Time flies, time flies.

I panicked. Twenty years later, I became a great scientist and developed the "Chang 'e IV" satellite, which can send people to the moon. After everything was ready, I boarded "Chang 'e IV" and flew into the vast space with my dream for many years.

After a long space trip, Chang 'e IV finally landed on the front of the moon. I took the first step on the moon with excitement. I feel very light and want to fly.

The surface of the moon shines with silvery white light, but the sky is dark, which is very different from the earth. I excitedly took out the national flag I carried with me and held it tightly in my hand.

Yes, I will personally plant this bright starless red flag on the moon, and I will shout to the deep universe: "We Chinese are coming! We are also a big country in aerospace science and technology! " I am excited again. Standing under the red flag, I looked into space and looked forward to seeing the blue crystal ball 380 thousand kilometers away.

Finally, I saw, saw the earth where I live. Isn't that looming and winding grand building the Great Wall of Wan Li? At this time, my thoughts suddenly returned to Xichang launch base on October 24th, 2007/KLOC-0.

The Long March 3A carrier rocket straightened its back and carried Chang 'e-1 through the clouds. That was the first step of our lunar exploration project.

I still remember that scene, which made me dream of space flight when I was only twelve years old. I sorted out my thoughts and followed Chang 'e IV to our experimental base, sowing all kinds of seeds brought from the earth.

One day, the gray moon will also wear green clothes. (Kunshan.

2. What is space like? What's space like? In fact, the universe is what we see now: the earth, the moon, the sun, the solar system, the milky way, clusters outside the milky way, clusters we can see and clusters that Hubble Space Telescope can reach.

Here you will ask, what is beyond the cluster that space telescopes can't reach? I will tell you: that's the edge of the universe. You will ask again: What is the edge of the universe like? I'm telling you: that's a point.

You will say: Bullshit! I will ask: What do you mean by places that can't even be detected by space telescopes? If you are interested in the universe, know Einstein's special relativity, general relativity and basic knowledge of physics, and know the Big Bang theory, you can continue to listen to my explanation: the diameter of the universe is about 65.438+0.5 billion light years, and the distance from us to the sun is about 8 minutes. In other words, the sunlight that shines on you now comes from the sun eight minutes ago, which means that the sun we see is the sun eight minutes ago.

We assume that if we can see the edge of the universe, it must be the universe 65.438+0.5 billion years ago. What was the universe like 654.38+0.5 billion years ago? The answer given by the big bang theory is a point with infinite density and infinite curvature.

There is nothing wrong with logic! You would say, logically, yes, what if the big bang theory is wrong? Your suspicion is right, the Big Bang theory is wrong, but there is nothing wrong with the conclusion that the edge of the universe is a point. The universe is time and space, not only space, but also time.

And matter. The space environment is very different from the earth environment. There is no air, no gravity and dangerous space radiation.

Of course, there is enough air for you to breathe in a closed space station or space shuttle cabin. Good spacecraft shielding materials can effectively block space radiation, but "weightlessness" will bring some troubles to life. If you live in space in the way of the earth, you will definitely make a lot of big jokes.

For example, when eating, you carry a bowl of rice, and the rice will float all over your cockpit. You may not be able to eat anything with your mouth open. When you keep your mouth shut, rice grains may float into your nostrils and choke you to death. You want to lie in bed and sleep comfortably, but you will find that space has no upper and lower boundaries, and there is almost no difference between "lying" and "standing" ... so how do astronauts eat and sleep in space? There are more than 100 kinds of space food, and the astronauts' food is rich and colorful, from the initial dozen to more than 100 kinds.

Astronauts usually eat four meals a day, and the recipes are not repeated for a week. Some people think it must be boring for astronauts to make toothpaste out of their food. In fact, this is the case of early astronauts, and now it is not what it used to be.

Astronauts can eat sausage pies, spicy grilled fish, roast beef with potatoes, buttered bread, lobster sauce broth, tuna salad, biscuits, chocolate, yogurt, preserved fruit, juice and other delicacies in space. American astronauts can even drink their favorite Coca-Cola. However, astronauts can't eat casually.

They must eat according to the recipes prepared by the nutritionist on the ground. When the astronauts on the American space shuttle eat, they first take out the plastic bag marked "which day and which meal" from the food cabinet.

There are seven kinds of food in each plastic bag for astronauts to eat. Space food is dehydrated food. Before eating, you can put the food in a bowl-shaped container, then inject a certain amount of water into the container with a syringe and heat it in the oven.

A meal can be cooked in less than half an hour. Unusual eating movements. The space dining table is specially made.

It is magnetic and can absorb knives, forks, spoons, bowls, plates and other tableware. The table is equipped with a water cooler and a heater. When eating, astronauts must first fix their feet on the floor and their bodies on the seats to avoid fluttering.

Don't worry about the food on the table. You must pay attention to the coordination of a series of actions such as serving bowls, meals, opening your mouth and chewing. Gently end the bowl, too hard, rice will float out of the bowl; It is necessary to be decisive in clamping rice and vegetables, to be accurate in clamping, and to clamp in clamping. It's best not to pull into the bowl, lest the food drift away. Forks are the best. After the food is caught, open your mouth and shut up quickly, because even the food put in your mouth will fly away if you don't shut up; When chewing, the rhythm should be slowed down. Chewing slowly is beneficial to digestion, and it can also reduce the generation and excretion of waste gas in the body and avoid the pollution of astronauts' living environment.

Some people like to chat while eating, and eating in space is the most taboo. Eating and talking will make the food scraps chewed in your mouth fly out of your mouth and float into the restaurant or living room. Astronauts are easily suffocated by their lungs if they accidentally inhale into the nasal cavity.

Features "Mrs. Wang fried mutton" Although space food is rich in variety and nutrition, astronauts generally complain that it is tasteless to eat in the sky. Scientists have analyzed that the reason may not be the food itself, but the taste disorder caused by the space environment.

For example, weightlessness makes the nasal cavity congested, which leads to the dullness of the taste nerve, and the change of saliva secretion affects the taste, or the taste is affected because the color of food cannot be seen or the smell of food cannot be smelled. When Wang Ganjun, a Chinese-American astronaut, took the space shuttle, his wife cooked his favorite fried mutton to give him a good appetite.

This kind of food is named "Mrs. Wang fried mutton". It is really a kind of "confused feeling" for astronauts to sleep in space, which is manifested in black and white and strange sleeping position.

Black and white means that astronauts sail around the earth in the sky, and the sunrise and sunset in space depend on the time for the spacecraft to orbit the earth once. Sometimes sunrise and sunset alternate many times in 24 hours, so astronauts can't follow the life habit of "sunrise and sunset" on earth, so they have to arrange their work and sleep mechanically according to the hours.

Strange sleeping position means that astronauts can't find the feeling of "lying down" in the weightless environment of space. In the gravity environment of the earth, people are used to setting the direction of gravity as "down" and the direction of "sky" as "up", that is, people often say that "the foot steps on the earth and the blue sky is overhead".

But in the weightless environment, people lose the reference coordinates of "up" and "down", their feet can't reach the ground, and the sky is all around them. You can't tell up from down at all, so there is no such thing as lying flat when sleeping. Because whether standing, lying down or lying down.

It has always been our human dream to imagine what space looks like and fly to space. In 2087, we can finally realize our dream.

I set foot on the road of space travel. I sailed in the solar system in a spaceship. The spacecraft has been driving for a long time, and suddenly it says that it has received a life response, and its destination is Pisa at 34 north latitude. I hurried down, thinking that there are other creatures in the universe besides us. When I got out of the spaceship, I saw that there were no trees and flowers on this star, only pizza ingredients. I pinched a handful of dirt and put it on the tip of my tongue. I was shocked: this is flour! I suddenly realized that the Star of Pisa is a huge pizza. I walked forward step by step, hoping to find other creatures. I came to a tribe that looked like a yurt. I saw the "monster" coming out from there. Its head is a cat's head, and its lower body is almost the same as ours, except that its hands become pliers and it has an extra tail. I took out the latest universal language translator: "Who are you? Are you from this planet? " I saw a man with a bow and a crown on his head and said, "I am the head of the family here." My name is pity. We are pizza people, also known as pizza people. We have lived with a group of dragons for hundreds of millions of years. What about you? " "I'm from the earth, nice to meet you. I am Song Enjia. " I said happily, and then asked a question, "dragon"? Does it really exist? Where are they? ""Now that we have known each other, I don't want to tell you that they have been living in our house, and every family will have one or two. We are willing to live with them, but we don't know the language. Let me take you to my house. There are three in my family. " After that, she took me to her home. Her home is several times larger than others. When we walked into the backyard, I was surprised and shouted, "Ah, ah, ah! Dinosaurus! Liu asked inexplicably, "Dinosaurs?" "Are they called dinosaurs?" "Yes, I try to communicate with them." I walked beside an older Triceratops because I thought older dinosaurs knew more things. "Excuse me, are you a dinosaur? Aren't you extinct on the earth? Why are you here? " I asked with an interpreter. It slowly raised its head, looked at me and said slowly, "Are you from the earth?"? How can you talk to us? " "How do you know? I really come from the earth, and I can communicate with you because of the' language translator' in my hand. You haven't answered my question! " It glanced at the translation machine in my hand and said, "Well, I'll tell you one thing: at that time, my ancestor Dragon King predicted in advance that the earth would encounter catastrophe, so let's build a spaceship quickly." On that day, we flew a spaceship into space. Some dinosaurs didn't believe it, and they stayed on the earth and died. We chose the Star of Pisa to survive. "I suddenly feel relieved that there is such a history. It went on to say, "since you can communicate with us, can you teach pizza people to communicate with us?" I can see that they really want to live with us. "Of course I am willing to accept it. I found Liu Zushi, gave her several spare translation machines, and found the inventor of the machine and taught him how to make it. I stayed here for a few days, and then I embarked on a journey. In Pizza Star, I not only found the extinct dinosaurs, but also forged a beautiful friendship with the pizza man.

I wonder what kind of people and things I will meet on my next trip.

4. What is space like? Does anyone know what space is like? Maybe no one knows! Only astronauts know.

I also want to know what it looks like. I really want to travel in space! It's delicious, but how can I get up there? By plane, spaceship or rocket? Who can answer me? Only scientists know. The space I imagined was super large, surrounded by satellites, and it was dark, but there were shining little stars around, illuminating me. I sat on the spaceship, looking at the beautiful scenery in the distance and enjoying the beauty of the night sky. The Big Dipper, I saw the biggest one, glowing with golden light, that is the Big Dipper, the most beautiful one among the stars and the most valuable one in my heart! Then, I saw many stars that I had never seen before. How beautiful they are! Doodle, doodle, doodle, doodle, doodle, doodle, doodle, doodle, doodle, doodle, doodle.

At this moment, my dream woke up. It was a dream! Although this is just a dream, it makes me feel what space is like. I really want to travel in space.

5. Observe the space in 450 words.

June 20 13, China Shenzhou-10 spacecraft was successfully launched in xichang satellite launch center. After successfully docking with Tiangong-1, astronaut Wang Yaping had a wonderful space experiment class in Tiangong-1 cabin. Some mysterious space mysteries appeared before my eyes. Teacher Wang Yaping made me experience one magical moment after another with her experiments. I exclaimed and felt the mystery of space.

How do astronauts drink water in space? Teacher Wang Yaping said: "In space, you can't drink water from a cup like on the ground, you should use a drinking bag." In the experiment, Mr Wang Yaping put a small ball on the support. After putting the ball in the air, he releases his hand and the ball will keep spinning instead of turning left and right and then stopping. This is the phenomenon of weightlessness. Therefore, in the weightless environment of space, water is not like "flying down three thousands of feet" in Li Bai's poem, but floating in the air and can't be put into a glass at all. How do people sleep in space? Because of the weightless environment in space, the up, down, left and right directions are blurred. Sleeping in space is different from sleeping on the ground. Fix the sleeping bag in the space on the wall so that people will not drift away when sleeping in the sleeping bag. The most amazing thing is that water films can be made in space. Because of weightlessness in space, it is easy to do. Put a bracket on the table and take the water out of the bracket, you can quickly make a water film and add color. There are many physical phenomena in space. ...

A class will be over soon. However, there are still many unsolved mysteries in space that need to be solved in the future.

6. Keep a diary and imagine what space is like. The vast universe often gives people a beautiful vision. It seems that its owner has mysterious power, prompting people to explore it, until one day ... it was a sunny morning, I woke up in a daze, my eyes opened slightly, "Ah", because I saw a house that I was completely unfamiliar with, with ultra-modern decoration. I nodded vigorously and asked him, "This is ……" "This is the planet Modia, and you should have come in from the photometric black hole." After listening to his words, I seem to understand a little. I got out of bed, put on my shoes and flew involuntarily. "Ah, oh, baby." My head kept hitting the roof, and the boy forced me. "You can call me anything." "Then I will call you a friend of the earth." "Very good." He showed me around the planet Moria, and the streets were full of houses of the future. When all the modians saw me, they said kindly, "little earth." Seeing that strangers are so friendly to me, I really began to like this planet. "You see, this time, Modi University, we will all go to this university in the future. We advocate free learning. If we like music, we will play the piano, listen to music, draw pictures and be clay figurines every day. " Listening to this "ism" that we can't even think about on earth, I began to fall in love with this planet. After walking for about 65,438+00 minutes, we arrived at the "Planet Park" which is more like a fairyland. We walked along the path with tall bamboos on both sides. Winter jasmine with yellow hair dances gracefully in the breeze like a beautiful girl; The rich rose is like a proud and coquettish princess, swaying all day, holding her head high ... The clear lake reflects people's shadows, and the fish in the lake are alive and kicking and playing happily. There is also a big fish in the middle of the lake, which is the mascot of Modia planet-Happy Fish. Its scales are shining all over, with a faint turquoise light, and everyone loves it. Suddenly, a light fell from the sky, Jim. Let me go back at once in this light, I can't bear to go ... I woke up. It turned out to be just a dream, but I know it is not a simple dream. One day, the earth will become the planet of Modia.