| What is the hottest planet in the solar system? |
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At a balmy 480° C (896° F) its the hottest planet. Mercury doesn't have an atmosphere so it can't trap the sun's heat. Venus on the other hand has a dense atmosphere made up of mostly carbon dioxide which is a greenhouse gas. Greenhouse gases trap the sun's heat. Comments (1)
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You'd think its Mercury because its the closest to the sun but its not. If you're looking for a hot property in the solar system you should go to Venus. 