Happy space Saturday everybody! Today, as the weather turns colder in the northern hemisphere, we want to pay tribute to our warming sun. The sun is a star, a hot ball of glowing gases at the heart of our solar system. Its influence extends far beyond the orbits of distant Neptune and Pluto. Without the sun's intense energy and heat, there would be no life on Earth. And though it is special to us, there are billions of stars like our sun scattered across the Milky Way galaxy. Pictured here, the most sensitive solar portrait ever taken in high-energy X-rays, captured by NASA's Nuclear Spectroscopic Telescope Array, or NuSTAR. Credit: NASA #sun #Xray #solar #solarsystem #spacesaturday #nustar #nasa #space #photography #universe #spaceisrad