Essays on English constellations

Beautiful and mysterious starry sky The vast starry sky is boundless and has no limit. If you look around the universe, you will find that there are twinkling stars (6,974 stars are obvious to the naked eye), including red, blue, yellow and white ... Among them, many stars will form a constellation, some are animals in the constellation, some are like natural objects, some are like utensils, and some are like mythical characters ... It's so beautiful! It is natural. There are not only beauty but also mystery in the starry sky. If you look around the universe, you will find that there are twinkling stars all around, bright, dark, big and small ................................................................................................................................................ Mysterious UFO mystery, black hole mystery, dark matter and antimatter mystery ..... have cast a mysterious veil on the universe. The universe is really a beautiful and mysterious place!

The sun The sun is burning a big fireball, which is located in the center of the solar system. The earth and its nine brothers revolve around the sun. The sun is so big that it can hold almost 65,438+300,000 earths. The sun is hot, the surface temperature is several thousand degrees Celsius, and the center temperature is also hot! The sun is now 5 billion years old, and scientists predict that it may exist for another 5 billion years. If the sun is destroyed, what about mankind? Don't be nervous. At that time, human beings have mastered high technology and established their own homes in another corner of the universe.

Earth The Earth is the third planet in the solar system, ranking fifth in size. The earth is the home of mankind and a blue star. There are 29% land and 7 1% ocean on the earth. The earth is the only planet suitable for life in the solar system, and it is also the only planet suitable for human habitation among the planets explored by human beings at present. The earth is spinning around the sun, and at the same time it is spinning. It takes about 365 days for the earth to revolve around the sun, and it takes about 24 hours to rotate once. The radius of the earth is about 6400 kilometers, and the distance from the sun is about10.50 billion kilometers. The earth has a satellite, and that is the moon.

Stars in the universe, any star that can emit light and heat, are called stars. Stars are generally big and bright, but there are also many lights that are weak or smaller than the earth. Our sun is also a star. Stars have different brightness, so we can grade them. A 6-magnitude star can barely be seen, but it can't be seen below 7. Starting from the 6th grade, it is determined to be 5th grade, 4th grade, 3rd grade, 2nd grade, 1 etc., 0/etc.,-1 etc.,-2, etc ........................................................................................... There are 6974 stars visible to the naked eye. Stars also have different colors, and different colors represent different temperatures. It's like the blue star has the highest temperature and the red star has the lowest temperature. Multi-star constellation, a total of 88 constellations throughout the day.