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Venus

By size very similar to Earth, but the conditions on the surface of Venus are completely different.
Nearly the whole atmosphere consists of carbon dioxide. Therefore the high temperatures (greenhouse effect) which let the rocks on the surface glow in red and the pressure 95 times higher than this on Earth. This is covered by a thick layer of clouds consisting of sulfuric acid.

Venus is also known as Morning and Evening Star and is the third brightest object in the sky (after Sun and Moon).

Distance from the Sun: 0.72 AU
Mass: 0.82 * Earth
Diameter: 0.95 * Earth (12 104 km)
Surface temperature: 737 kelvin
Orbit period: 243 days
Moons: 0

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Photo: Nasa
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