The sun is very, very, very large. The sun is a star. It is in the center of the Solar System. The sun is a ball of gasses. The fire on the sun can be very hot. The Sun is almost a perfect sphere. Over a million earths can fit into the sun. It is by far the most important source of energy for life on Earth. no animals live on the sun because the temperature is over 27,000,000 Fahrenheit. The sun keeps all living organisms alive.