From a plane you can see the fields, cities, mountains or rivers below. If we go into space, we see more and more of the earth. People and man—made satellites (卫星) are sent into space to look at the earth, the stars and other planets and learn more about them.

The moon is our nearest neighbor in space. It is our satellite and men have visited it already. It is smaller than the earth. Plants can’t grow on the moon because there is no air or water on it. There are lots of mountains on the moon. At night, it is very cold on the moon. It is not comfortable to live on the moon if possible. On the moon, there is much dust here and there. The things on the moon are much lighter than the things on the earth.

The moon hasn’t its own light. It shines back (反射) the light of the sun. When the sun is shining on the side of the moon that faces us, it looks like a great round ball. We can’t see the moon when the sun is shining on the side of the moon that faces away from us.

In fact, the moon isn’t as near as it looks. It is 380, 000 kilometers away from the earth. Of course we can fly to the moon in a spaceship. It only takes more than three days to get there by spaceship.

We look at the sun every day. 【小题1】

On Sept. 2nd, 2021, China’s Fengyun-3E satellite took its first photo of the sun. 【小题2】 The pictures taken are very clear. The satellite was sent into space on July 5th. And by the end of 2021, China released an album of photos taken by the satellite.

One of the satellite’s sides faces the sun all the time. 【小题3】 Why is watching the sun so important?

Clear pictures of the sun can help scientists study it more deeply. For example, scientists can better study solar storms. These may affect the weather on Earth. 【小题4】 An astronaut would be in great danger if he or she was on the moon during the storm. 【小题5】

What is it like to travel in space? People aboard the Aurora Station（曙光女神空间站）, the world's first luxury（豪华的）space hotel, can tell you in the future. The hotel plans to welcome its first guests in 2022, CNN reported.

US company Orion Span built the hotel. It will fly 320 kilometers above Earth. It can hold six people at a time. Two of them will be workers. They may be former NASA astronauts.

Each trip aboard the station will last for 12 days. Guests there will be able to do many interesting things. For example, they will see 16 sunrises each day. They can fly and move around in zero gravity（重力）. They can also grow food in space. Later, they can bring the food back to Earth as a souvenir（纪念品）. These are the same things that astronauts usually do.

Guests can also share what they see and hear with others on Earth. They can have a video chat using a high-speed internet connection.

But the trip will be expensive. Each guest will have to pay at least $ 9.5 million（about 60 million yuan）.