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Our subscribers' grade-level estimate for this page: 2nd - 3rd
Table of Contents Enchanted Learning
All About Astronomy
Site Index
Our Solar System Stars Glossary Printables, Worksheets, and Activities
The Sun The Planets The Moon Asteroids Kuiper Belt Comets Meteors Astronomers

Your weight on the Planets The Planets Your age on the Planets
Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune pluto
VENUS

Introduction Inside Venus Atmosphere and Clouds Transit of Venus Spacecraft Visits Web Links

INSIDE VENUS


PLANETARY COMPOSITION

A petal volcano on Venus in the eastern Aphrodite Terra, taken by NASA's Magellan Mission, 1990.
Venus has a rocky crust, a thick basaltic rock mantle and a nickel-iron core. There is no surface water. The surface of Venus has been mapped through its cloud layer using radar. The surface of Venus is covered with roughly 20 percent lowland plains of solidified lava, 70 percent rolling uplands, and 10 percent highlands (volcanos, craters, mountains). The two major plains are called Aphrodite Terra Highlands (about half the size of Africa) and Ishtar Terra (a lava-filled basin which is bigger than the United States). At the surface, there are relatively slow winds.

Venus does not have a very strong magnetic field; this may be because of the planet's slow rotation or perhaps Venus' core lacks a molten outer layer.




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