Earth

Tags: Planet

Earth is the third planet from the Sun and the only astronomical object known to harbor life. This is enabled by Earth being an ocean world, the only one in the Solar System sustaining liquid surface water.

Venus

Tags: Planet, Science, Astronomy

Venus is the second planet from the Sun. It is a terrestrial planet and is the closest in mass and size to its orbital neighbor Earth. Venus has by far the densest atmosphere of the terrestrial planets, composed mostly of carbon dioxide with a thick, global sulfuric acid cloud cover.