Venus is also called the morning star because it rises earlier than the sun. It is also called the Pleiades because it sets later than the sun. Its brightness is comparable to 15 Sirius. China called it Taibai or Taibai Venus in ancient times. Venus, like Mercury, is an inner planet in Earth's orbit. The ancient Greeks called it Aphrodite, the goddess of love and beauty. The Romans called the goddess of love and beauty Venus, so Venus was also called Venus. Astronomers use the mirror of Venus to dress up every day, and write "♀" as the astronomical symbol of Venus.

Venus is brighter than Sirius 14 times. In winter, Jupiter goes around with the moon, which is called double star with the moon.