224.700 Earth days
0.615197 Earth years
Rotational period (day) is −243.018 5 earth day (1.92 Venusian years)
Distance from Sun:
108,942,109 km (0.728 231 28 AU)
3.394 71° to Ecliptic
3.86° to Sun’s equator
2.19° to Invariable plane
12,103.2 km
0.9 (Earth = 1.0)
96.5% Carbon dioxide
3.5% Nitrogen
0.015% Sulfur dioxide
0.007% Argon
0.002% Water vapor
0.0017% Carbon monoxide
0.0012% Helium
0.0007% Neon
trace Carbonyl sulfide
trace Hydrogen chloride
trace Hydrogen fluoride
Venus is the second planet in the Solar System and the second largest terrestrial world. It is named after the Roman goddess of love and beauty. It is also the second brightest object after the Moon, reaching a magnitude of -4.6. Venus is also called Earth's sister, mainly due to similar gravity, size and composition. However, Venus has the densest atmosphere of the four terrestrial planets, made almost entirely of sulfur and carbon dioxide and has clouds made of sulfuric acid. Venus is also believed to had oceans in the past, but the water evaporated due to a runaway greenhouse effect. Venus has two large continents called Ishtar and Aphrodite, which sit on lava seas, created by non-stop erupting volcanoes. Venus is mostley composed of volcanoes, along with highlands, mountains and plains.


  • Venus is the only terrestial planet to rotate backwards.
  • Venus has the longest day of any planet: 243 days. 
  • Venus is often referred to as Earth's twin.

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 The Solar System v·d·e 
Solar System XXVII
The Sun · Mercury · Venus · Earth · Mars · Ceres* · Jupiter · Saturn · Uranus · Neptune · Pluto* · Eris* · Sedna*
Planets · Dwarf planets · Moons: Terran · Martian · Asteroidal · Jovian · Saturnian · Uranian · Neptunian · Plutonian · Eridian
Pluto' * Ceres * Eris * Haumea * Makemake
Small bodies:   Meteoroids · Asteroids (Asteroid belt) · Centaurs · TNOs (Kuiper belt/Scattered disc) · Comets (Oort cloud)
planets with '*' are dwarf's but listed between 'real planets'.
See also astronomical objects and the solar system's list of objects, sorted by radius or mass.