The eight planets refer to the eight planets in the solar system, which have been running in the vast space for a very long time. The discoverers of the eight planets were named after people in human mythology, which made them so far away but seemed close to us. Then let's take a look at the origin of the names of the eight planets and what myths they are related to. Mercury: Mercury in Hermes is the closest planet to the sun and the second asteroid in the solar system. The English name of Mercury comes from the Roman god Mercury, which is equivalent to Hermes in Greek mythology. It is a god who sends information to the gods and is in charge of commerce, roads, science, invention, eloquence and luck. Mercury is closest to the sun. According to the law of universal gravitation, the celestial body closest to the sun runs fastest. Therefore, it is reasonable to name Mercury after Mercury and Hermes. Mercury's constellation symbol is a circle above, a short vertical line below and a semicircle, which is exactly the shape of Mercury's wand. Venus: Venus in Aphrodite is the second closest planet to the sun and the sixth largest planet in the solar system. Of all the planets, Venus' orbit is the closest to a circle with a deviation of less than 1%. The ancients in China called Venus Taibai Venus, also known as Qi Ming or Chang Gung. The ancient Greeks called it Aphrodite, the goddess of love and beauty in Greek mythology. In Roman mythology, it corresponds to the goddess Venus, so Venus is also called Venus. Venus in the sky is the brightest of all stars, with an apparent magnitude of -4.4, while Sirius, the brightest star in the night sky, has an apparent magnitude of less than-1.4, and the observed brightness is ten times different. Because it is so beautiful and dazzling, it is named after Aphrodite, the goddess of love and beauty. Earth: The earth is the third planet from the sun, the largest terrestrial planet in the solar system and the fifth largest planet in the solar system. The earth is the only name that doesn't come from Greek or Roman gods. The word earth comes from old English and Germanic. Of course, there are many other languages. In Greek mythology, people regard the earth as Gaia, the mother of the earth, while in Roman mythology, the goddess of the earth is called Therus, which means fertile land.