Image: the planet Venus (© Sabino Parente).
Facts About Venus
Size: radius of 6.1 thousand kilometers.
Mass: 82% that of earth.
Gravity: 90% that of earth.
Rotation: 243 days (length of a day).
Surface Temperatures: 400-700 °K.
Surface of Venus
The surface of the planet is covered with large volcanic plains. The planet’s surface is considered young because it has few impact craters. Volcanic activity has shaped much of the planet’s surface.
Temperatures vary from 400-700 °K. The planet has a very thick atmosphere. Atmospheric pressure is 92 times greater than Earth. Most of the atmosphere is carbon dioxide with smaller amounts of nitrogen and sulfur dioxide.
The planet’s atmosphere traps solar energy. This results in atmospheric temperatures that are higher than on Mercury.
Improving Your Reading and Thinking Skills
Think for a few moments. Try to recall the major ideas in this article. When you are done, click the box below for a list of main ideas.
How did you do? With practice, you should be able to identify many of the major ideas. You may even discover some important ideas that aren’t listed.
Solar System Exploration, NASA.