VENUS

 
The second planet from the Sun, Venus is more like Earth than any other planet.  It is only slightly smaller and lighter than Earth and shares some common surface features, including mountains, volcanoes and vast flat plains.
Unlike Earth, however, its intense air pressure, incredible heat and poisonous atmosphere would make it impossible for us to live there.
Venus is the brightest object in the night sky, after the Sun and Moon.  This is because it has thick clouds high above it that reflect the Sun's bright light.
Just below these clouds in an atmosphere of gas called carbon dioxide which traps the Sun's heat.  This is known as the greenhouse effect.  It means that Venus's surface temperatures can reach 900ºF and (unlike Mercury) it stays around that temperature day and night.
Did you know? In Earth terms, a day on Venus is longer than a year there: a day on Venus lasts 243 Earth days; a year lasts only 225 Earth days.
Venus Statistics
Mass (kg)4.869e+24
Mass (Earth = 1).81476
Equatorial radius (km)6,051.8
Equatorial radius (Earth = 1).94886
Mean density (gm/cm^3)5.25
Mean distance from the Sun (km)108,200,000
Mean distance from the Sun (Earth = 1)0.7233
Rotational period (days)-243.0187
Orbital period (days)224.701
Mean orbital velocity (km/sec)35.02
Orbital eccentricity0.0068
Tilt of axis (degrees)177.36
Orbital inclination (degrees)3.394
Equatorial surface gravity (m/sec^2)8.87
Equatorial escape velocity (km/sec)10.36
Visual geometric albedo0.65
Magnitude (Vo)-4.4
Mean surface temperature482°C
Atmospheric pressure (bars)92
Atmospheric composition
Carbon dioxide
Nitrogen

Trace amounts of: Sulfur dioxide, water vapor,
carbon monoxide, argon, helium, neon,
hydrogen chloride, and hydrogen fluoride.



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