Venus – UPSC Prelims

Venus:
  • Venus is the second planet from the sun.
  • It is sixth in the solar system in size and mass.
  • It is similar in structure but slightly smaller than Earth (Earth’s Twin).
  • Venus has a thick and toxic atmosphere that consists primarily of carbon dioxide, with clouds of sulfuric acid droplets.
  • Temperature: The planet’s surface temperature is about 465 degrees Celsius, hot enough to melt lead.
  • Venus is one of just two planets that rotate from east to west. Only Venus and Uranus have this “backward” rotation.
  • Life on Venus: Venus’s extreme temperatures and acidic clouds make it an unlikely place for life.
  • Venus does not have any moons, a distinction it shares only with Mercury among the planets in the Solar System.
  • It is the hottest planet in the solar system because of the high concentration of carbon dioxide which works to produce an intense greenhouse effect.
New findings about Venus:
  • Venus has the longest day (the time the planet takes for a single rotation on its axis ) of any planet in our solar system.
  • Venus takes ~243 Earth days to rotate around its axis while it takes only 225 Earth days to revolve around Sun. So, on Venus a Day is longer than a year.
  • Venus spins on its axis almost upright (meaning it lacks noticeable seasons) while Earth has more of a tilt. Venusian tilt at about 2.64 degrees. Earth’s is about 23.5 degrees.
  • The Venusian planetary core has a diameter of about 7,000 km comparable to Earth’s core which is about 6,970 km.
  • Venus core is almost certainly consists of iron and nickel, though it is unclear whether it is solid or molten.

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