But you are stupid.
The sun is 93 million miles away, that explains why it's so hot and why we don't burn up. The round earth perfectly explains why the temperature changes, as the sunrays are trapped. Some places are closer to the sun than others, explaining why Mexico is hot all year round, but Canada and Argentina aren't. If the sun was only 57 degrees celsius, EVERYWHERE ON EARTH would be as cold as antarctica, and the north pole would be the hottest place on earth due to it being almost always daytime there during summer.