Ninety-three million miles from Earth, a giant ball of hot gas brightens the sky. Nuclear reactions in the Sun's core create energy, which gradually flows to the Sun's surface. This energy reaches Earth in the form of sunlight. The Sun's heat and light warm Earth's surface, drive weather and currents, and make life possible on our planet. We experience the Sun's energy every time we feel its warmth on our skin or see with the aid of sunlight.

Image credits: main image: courtesy of NASA/SDO; quote, © AMNH.