4Venus

= Venus  = ==There are 4 Terrestrial planets in our solar system with very unique characteristics.These are the warmest and rockiest planets in our solar system but Venus is the Deadliest.Venus is the 2nd Closest planet to the Sun and is one of the Hottest planets in our solar system. It is named after the Greek Goddess of love and beauty. ==

=Characteristics of Venus =   Venus is one of the 4 Terrestrial planets in our solar system. Venus is very closely related to earth as in shape, mass, size, and density. The radius of Venus is only 325 km less than the Earth's, however, conditions on the Venusian surface differ radically from those on Earth, due to its dense atmosphere. The mass of the atmosphere of Venus is 96.5% carbon dioxide, with most of the remaining 3.5% composed of Nitrogen.

Much of Venus's surface appears to have been shaped by volcanic activity. Overall, Venus has several times as many volcanoes as Earth, and it possesses some 167 giant volcanoes that are over 100 km across. Lightning was detected in the atmosphere of Venus though there is no rainfall on the surface of Venus though it does rain Sulfuric acid in the upper atmosphere that evaporates around 25 km above the surface. It is possible that the volcanic ash in the atmosphere is generating the lightning but also the amount of sulfuric acid could also be causing it. Venus has an extremely dense atmosphere, the atmospheric mass is 93 times that of Earth's atmosphere while the pressure at the planet's surface is about 92 times that at Earth's surface. The density at the surface is 65 kg/m³. The CO2-rich atmosphere, along with thick clouds of sulfur dioxide, generates the strongest greenhouse effect in the Solar System, creating surface temperatures of over 860 °F which makes Venus's surface hotter than Mercury's which has a maximum surface temperature of 420 °C, even though Venus is nearly twice Mercury's distance from the Sun. Studies have suggested that several billion years ago Venus's atmosphere was much more like Earth's than it is now, and that there were probably substantial quantities of liquid water on the surface, but a runaway greenhouse effect was caused by the evaporation of that original water, which generated a critical level of greenhouse gases in its atmosphere.

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=Quick Facts =
 * 1) Venus is almost the same size as Earth
 * 2) Venus has no Moons (Satellites)
 * 3) The Atmosphere is too dense for people to live there
 * 4) Venus's year is shorter than its day
 * 5) The size and density is very close to that of Earth's
 * 6) The surface of Venus is mainly volcanic
 * 7) Venus has almost no Magnetic field



=Web Links =


 * 1) nasa.gov/worldbook/venus_worldbook.html
 * 2) solarviews.com/englvenus.htm
 * 3) aerospaceguide.net/planet/planetvenus.html

=Bibliography =


 * 1) The Sun, Mercury, and Venus, Chelsea-House, New York NY, 2006
 * 2) World Book, World Book, Chicago IL, 2007
 * 3) http://nasa.gov/worldbook/venus_worldbook.html
 * 4) http://solarviews.com/englvenus.htm
 * 5) http://en.wikipedia.org/wiki/Venus