The Sun is so hot that even if you went in a spaceship to the Sun. The spaceship would break because of how hot the Sun is. The Sun is very hot. In fact the Sun is 10,000 degrees fahrenheit and 5,500 degrees celsius!That is really really really hot.Temperature on the core may reach as high as 27 million degrees .You can not look directly at the Sun because it can hurt your eyes and can blind you. The photosphere is a part of boiling gases that makes up the Sun’s surface. The Sun’s light and heat comes from fires deep inside it. About five billion years ago, a huge cloud of dust and hydrogen gas began to pull together and that’s what formed the Sun.