When night falls, we will find the stars twinkling, like a pair of eyes blinking. Why is that? It turns out that the light emitted by the stars needs to pass through the atmosphere to reach our eyes. However, the atmosphere is not completely transparent, it is made up of many gases and tiny dust particles. As the starlight passes through these gases and dusts, the light is refracted and scattered, causing the star's light to flicker and darken, as if in the blink of an eye. In addition, the Earth's atmosphere fluctuates with changes in temperature and air pressure, and these fluctuations also affect the propagation of light, making the twinkle of the stars more noticeable.
Actually, the blink of stars is not because they are twinkling, but because of the effect that starlight is affected as it passes through the Earth's atmosphere. This phenomenon also tells us that the Earth's atmosphere plays an important role in the propagation of light. Without an atmosphere, the stars we see would be stationary, not twinkling. Therefore, astronomical exploration is not only to understand the mysteries of the universe, but also to better understand our own Earth.
In addition to the twinkling of the stars, astronomical exploration involves many other interesting phenomena. For example, how is a comet's tail formed? Why are there solar and lunar eclipses? These are all questions that scientists have been exploring. By studying these phenomena, we can better understand the structure and evolution of the universe, as well as the Earth's place in it. Therefore, whether it is for the study of astronomy or for the survival and development of human beings, astronomical exploration is of great significance.