Composition by volume: 96.5% carbon dioxide; Click to see full answer. Keeping this in consideration, what is the sister planet of earth? Venus how are the Earth and Venus different? They are also neighboring planets. However, Venus and Earth are also very different. Venus has an atmosphere that is about 100 times thicker than Earth’s and has surface temperatures that are extremely hot. Venus does not have life or water oceans like Earth does. Simply so, what do Earth and Venus have in common? Venus compared to Earth. Venus, Mars and Earth, three out of the four inner or ‘rocky’ planets of the Solar System, have a lot in common – a solid surface you could walk on, a comparable surface composition, an atmosphere and a weather system.What is another name for Venus?Like the planet Mercury, Venus was known in ancient Greece by two different names—Phosphorus (see Lucifer) when it appeared as a morning star and Hesperus when it appeared as an evening star.