Astronomical number is a term to describe very large or very small numbers, which is usually used to describe the distance, quality and quantity in astronomical measurement. Specifically, astronomical figures are a relatively large number, and the distance, quality and quantity in the universe are usually measured by light years, galaxies and stars.

1. In cosmology, astronomical figures are used to describe the scale of the universe. For example, a light year is the distance that light travels in a vacuum in one year, which is about 9.4 1 trillion kilometers. This number is very large, far beyond the scope of human daily experience. In addition, the distance between galaxies is also very far, sometimes even reaching millions of light years.

Astronomical figures can be used to describe the quality and quantity in the universe besides distance. For example, the mass of a galaxy can be as high as hundreds of billions of times that of the sun, and the number of stars in the universe may reach tens of billions. These figures are huge, far beyond the range that human beings can directly perceive.

In addition, astronomical figures can also be used to describe extreme situations in the universe. For example, the temperature in the universe can be very low or very high, which is beyond the range that human beings can bear. At the same time, the density in the universe can be very high. For example, black holes have extremely high density, great mass and small body initiative.

The importance of numbers is as follows:

Numbers play a vital role in our daily life. Numbers play an indispensable role in processing information, exchanging ideas and promoting the development of science and technology. The importance of numbers will be discussed in detail below. First of all, numbers are an important tool for information transmission. In our daily life, whether it is oral communication or written expression.

Numbers are usually used to convey specific information. For example, in business transactions, numbers are used to represent the price of goods and the amount of transactions. In the field of scientific research, numbers are the key tools to measure, compare and analyze data. Numbers can be used to quantify various things and help us understand their essence and characteristics more accurately.

3. Secondly, numbers are the basis of logical thinking. Number is one of the basic concepts in mathematics and logic. Through logical operations such as addition, subtraction, multiplication and division of numbers, deeper knowledge and laws can be deduced. The logical operation of numbers is not only very important in scientific research, but also a key tool to solve problems in daily life.