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Venus is the second closest planet to the sun after Mercury. It gets its name from the Roman goddess of love and beauty. You can see it in the night sky. It's very bright. Only the moon is brighter. From space, the earth and Venus look similar(相似). It's called our sister planet! The earth is 12. 742kilometers across and Venus is 12. 104 kilometers across. They are almost the same size! They are both hot in the centre. They both have mountains and canyons(峡谷). But everything else about them is very different! The earth is beautiful and safe. Venus is the most dangerous place in the solar system.

Venus is the hottest planet in the solar system. It is hotter than Mercury! Thick clouds on Venus keep all the heat inside. The temperature is 462℃! Venus' extreme temperature and acidic(酸性的)clouds make it impossible for life. The air on Venus is poisonous(有毒的) and very heavy. You would weigh more than 150 kilograms on Venus. Also days are really long on Venus. One day on Venus is as long as 117 days on earth! Nobody wants to go to school on Venus. An English class takes 40 days.

More than 40 spaceships have explored(探索) Venus. But no astronauts have visited it yet. It is just too dangerous!

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