What Is Venus Made out of?

Answer

The planet Venus is made up of a central iron core and a rocky mantle, similar to the composition of Earth. Its atmosphere is mainly made up of 96 percent carbon dioxide and three percent nitrogen with small amounts of other gases. This atmosphere causes Venus to have a powerful Greenhouse effect, which allows the planet to have high temperatures that reach up to 470 degrees Celsius.
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1 Additional Answer
Venus is composed of mostly carbon dioxide (96.5%). It also is composed of 3.5% nitrogen. The surface of Venus is unknown because no spacecraft has survived on the surface for longer than a few hours.
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