VenusBy: Daryn Flanegan and Ryan Anderson

external image Venus-Unveiled.jpg

Contents:

  1. Introduction

  2. The Planet's structure

  3. The Atmosphere

  4. Fact File

  5. Exploration

  6. Bibliography

Introduction

Venus is the second planet from the sun completing a full orbit every 224,7 earth days.It is named after the Roman Goddess of love and beuty and excluding the moon is the brightest object in the night sky.Venus is at its brightest shortly before sunrise and shortly after sunset which is the reason why it has been given the name Morning or Evening star.

external image venus-1.jpg
external image sandrobotticelli-the-birth-of-venus-1490.jpg


The Planet's Structure


Interior

There is very little known about venus core because the extreme winds allow for very little exploration although the interior of Venus is believed to be

similar to Earths with a metallic core and silicate mantle nothing is known for sure. With the imformation that venusus interior is like earths it is believed that it has a core of metal about 3000km across surrounded by a 3000 kilometre thick mantle and a 50km thick crust. Unlike the Earth, Venus has a very small magnetic field. There are also many faultlines that cover the planet, mostly because the heat of the planet weakens the rock under the surface. external image venus_cutbk_sm.gif

Exterior

There is very little known about the surface of Venus. The only information about it is that it is valcano ridden. Thick clouds of sulfuric acid block our veiw. Millions of years ago Venus, much like Earth, had an ocean but today it is barren with no water. The wind on the surface is emense, there has been many sattelites that have been shredded by the harsh conditions on the planet. It is Known though That Venus has two Continents by the names of Ishtar Terra and Maxwell Montes.

The Atmosphere


The pressure of Venus' atmosphere at the surface is 90 atmospheres (the same amount of pressure 1 km into earths ocean). It is composed mostly of carbon dioxide. There are many layers of clouds many kilometers thick made of sulfuric acid. This dense atmosphere Causes a greenhouse effect that raises Venus' surface temperature by about 125 degrees to over 465 degrees celsius (hot enough to melt lead). Venus' surface is actually hotter than Mercurys even though it is almost twice as far from the sun.


Exploration

The date thet Venus was discovered is unknown although we know that the Ancient Greeks knew about it .The first probe to flyby venus was the Mariner 2 in 1962 since then there have been 23 others that have explored Venus Sending back readings, pictures and very useful information. The most succesful Out of the probes was the Magellan probe which was launched in 1989 and it started transmitting radar images of the planet in 1990. After mappin 98 percent of the planets surface it entered the atmosphere and crash landed in october of 1994.

Fact file The Magellan Satelite

Distance from the sun

108 million kmexternal image magellan_DVD-1090-1_300x375.jpg

Diameter at equator


12100 km

Rotation on own axis (length of day)

243 days

Orbit (length of year)

224,7 days

Moons

0

Surface Temp.

460 degrees c

File:Venusorbitsolarsystem.gif
File:Venusorbitsolarsystem.gif