Our closest star is the sun! The sun is a yellow star.The sun is very, very, very hot. The sun is 93.96 million miles away from Earth. The sun is shaped almost like a perfect sphere. The temperature inside the sun can reach 15 million degrees celsius. It is not safe to look directly at the sun. It takes 8 minutes for the sun’s light to reach Earth. The sun is 27 million degrees Fahrenheit. The sun is about 4.6 billion years old. The sun is a yellow dwarf star, also known as a main sequence star. The sun is 400 times bigger than the moon but is 400 times further away from Earth making them appear the same size. The sun travels around the galaxy--a journey of 100,000 light years--once every 200 million years. When you look up at the sky you will see a big yellow star every day.