Facts Which you probably don't know Here we got some 10 fascinating facts about the solar system. So let's start:- Q.1:- Which is the warmest planet? Why? and What is the Greenhouse effect? A:- Venus is the hottest planet even though Mercury is the closest planet to the Sun . The reason that Venus is hotter than Mercury because it has an atmosphere made of carbon dioxide; it also has clouds of acid inside its atmosphere. This is called the greenhouse effect. Q.2:- How long would it take for a person to freeze in space? A: - After about one minute, circulation would stop altogether. After another minute, you'd be dead by asphyxiation. and a human will die in 15 seconds because, At most, an astronaut without a suit would last about 15 seconds before losing consciousness from lack of oxygen. (That's how long it would take the body to use up the o...