Venus is called the "Sister of Earth."
Venus earns this nickname because it shares several similarities with Earth, making it a kind of sibling planet. Here's a breakdown:
- Similar Size: Venus is only slightly smaller than Earth. Its diameter is about 95% of Earth's.
- Similar Mass: The mass of Venus is also close to that of Earth.
- Similar Density: Venus's density is comparable to Earth's.
- Similar Composition: Both planets are believed to have a similar internal structure, consisting of a core, mantle, and crust.
Despite these similarities, Venus and Earth are drastically different worlds today. Venus has a dense, toxic atmosphere composed primarily of carbon dioxide, resulting in a runaway greenhouse effect and surface temperatures hot enough to melt lead. It also lacks liquid water on its surface and has a very slow rotation rate.
Therefore, while Venus is called "Sister of Earth" due to these physical similarities, it is crucial to remember that the planets have evolved along very different paths.