地球物理学 Is the Earth really spherical? Part1 Spherical Earth theory 【Request】 Is the Earth really spherical? We often hear that the earth is spherical, but is that true? I will explain the... 2023.11.30 地球物理学地球科学
地球科学 Why is the sky blue? 【Request】 Why does the sky look blue while the universe is black? The night sky and space look black, but the daytime sk... 2023.11.30 地球科学気象学