Venus is the second planet from the Sun, orbiting it every 224.7 Earth days. It is named after the Roman goddess of love and beauty, and is the only planet in the Solar System named after a female figure. In Hebrew, Venus is called Noga (נוגה), which means "bright." In Spanish, it is called Venus, and in German, it is known as Venus or Morgenstern (morning star) and Abendstern (evening star). Venus is a terrestrial planet and is sometimes called Earth's "sister planet" because of their similar size, gravity, and bulk composition (Venus is both the closest planet to Earth and the closest in size to Earth). However, the similarity ends there as the two planets have significantly different atmospheres. Venus has the densest atmosphere of the four terrestrial planets in the Solar System, consisting mostly of carbon dioxide. The atmospheric pressure at the planet's surface is 92 times that of Earth's. With an estimated surface temperature of 464 °C (737 K), Venus is by far the hottest planet in the Solar System, though Mercury reaches higher temperatures in its sun-facing side. Venus lacks any moons or rings.