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Planets are celestial bodies that orbit stars, with our solar system hosting eight major planets revolving around the Sun. These worlds vary greatly in size, composition, and atmosphere—from rocky, terrestrial planets like Earth and Mars to gas giants such as Jupiter and Saturn. Some planets, like Venus, have thick, toxic atmospheres, while others, like Mercury, are barren and airless. Beyond our solar system, exoplanets orbit distant stars, some within habitable zones where liquid water could exist. Planets form from cosmic dust and gas, shaped by gravity over billions of years. Their study helps scientists understand planetary formation, climate dynamics, and the potential for extraterrestrial life. Each planet holds unique mysteries, contributing to the vast diversity of the universe.
