The Sun is a giant ball of hot plasma at the heart of our solar system. The Sun is mainly composed of hydrogen and helium, and it powers itself through nuclear fusion, producing the light and heat that sustain life on Earth.
What is the Radius & Diameter of the Sun?
The Sun’s radius is approximately 696,340 kilometers (432,690 miles) and its radius is approximately 1,392,680 kilometers (865,380 miles).
If you could fit all the planets in our solar system inside the sun, there would still be plenty of room to spare.