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Venus, the second planet from the Sun, shines as one of the brightest objects in thenight sky. Often called Earth%u2019s %u201csister planet%u201d because of its similar size and structure,Venus has long fascinated astronomers, scientists, and even ancient civilizations.Beyond its beauty, Venus plays an important role in helping us understand our solarsystem and the delicate balance that makes Earth habitable.A Twin with Extreme DifferencesAlthough Venus is almost the same size and mass as Earth, its environment could not bemore different. The planet is covered in thick clouds of sulfuric acid and has anatmosphere made mostly of carbon dioxide. This creates a runaway greenhouse effect,trapping heat and pushing surface temperatures above 465%u00b0C%u2014hot enough to meltlead. By comparison, Earth maintains a balanced climate due to its breathableatmosphere and active water cycle.These differences make Venus a natural laboratory for studying climate science. Byobserving how Venus became so hostile, scientists gain insights into how climatesystems work and what could threaten Earth in the distant future.Scientific Importance in the Solar System1.Understanding Climate and Atmospheres :Venus demonstrates the powerful effect of greenhouse gases. Its atmosphere offersa warning of what can happen when heat-trapping gases build up unchecked.This makes it a key case study in planetary climate change.2. Clues to Planetary Evolution :The surface of Venus, shaped by volcanoes and tectonic-like processes, providesinformation about how rocky planets form and change over billions of years.Studying its geology helps scientists compare it with Earth and Mars.3. Astronomical Significance :Venus has been vital for astronomical discoveries. In the past, transits of Venusacross the Sun allowed astronomers to calculate the scale of the solar system.Its brightness also made it a guiding star for early navigation and calendars.Continuing....A R T I C L E - V E N U S