1 Chapter 1: Overture

Starting with Guo Moruo's Tianjie, it brings us into the beautiful night sky and reveals the astronomical phenomena involved. Through the story of the Cowherd and the Weaver Girl, this paper skillfully introduces the Cowherd, Vega and related constellations, summarizes the concept, division and naming of constellations, and then puts forward the question of how far the stars are from us.

2. Chapter II: Dimensions of the Earth

In order to explore the question of how far the stars are from us, the first step for human beings is to measure the size of the earth, which is the first step to estimate the absolute scale of celestial bodies.

Eratoseni calculated the exact size of the earth for the first time by measuring the inclination of the sun to the vertical at noon in Thain and Alexander, but unfortunately it was not generally accepted by the world. It was not until Magellan sailed around the world that people corrected their previous mistakes.

Chapter 3: Where is the bright moon?

After accurately understanding the earth, human beings began to turn their research targets to the moon. As early as the 3rd century BC, Aristak of Asia Minor put forward the idea that the first quarter moon is used to calculate the ratio of the distance between the sun and the moon, and the total solar eclipse is used to calculate the ratio of the diameter of the sun and the moon, and put forward the idea that the earth rotates around its axis and runs around the sun.

Chapter 4: How far is the sun from us?

By telling the story of "Shooting Nine Days" and the Monkey King, the following introduction to the distance measurement between the sun and the earth is drawn. Kepler's three laws played a wonderful role when astronomers were worried that radar, laser and other means could not measure the distance between the sun and the earth.

project overview

How far are the stars from us is a book published by Hubei Children's Publishing House in 2009 by Bian Yulin. How far are the stars from us won the second prize of the Second National Excellent Popular Science Works Award. During the Ninth Five-Year Plan period, it was included in the dream collection of the national key book "Selected Works of Popular Science in China". ?

How far are the stars from us? Looking up at the starry sky, the stars shine. They are making eyes at us, implying a great secret. But if people want to ask the secret of finding the sky, they have to encourage the wings of the soul to fly out. ...

How far is the sun from us? How far is the sun from us? Aristak of Samos Island, mentioned earlier, cleverly calculated that the distance from the sun to the earth is 19 times longer than that from the moon to the earth, and about 20 times smaller than the actual situation.

Although Copernicus put forward the scientific Heliocentrism universe system, he didn't know how far the sun was from us. Until 1650, Belgian astronomer Wendling made another observation in Aristak with an improved instrument. He got a distance of 240 times that of the moon and the earth, about 96 million kilometers. Although the accuracy of this value has improved, it is still too small.