Our star, the sun, contains 99.8 percent of the mass of the entire solar system. It is an incredibly active, hot and dense sphere of plasma with a nuclear reactor at its core, which is driven by the pressure caused by the intense gravity. Beautiful and majestic, it is shown here in the H-alpha very narrowband spectrum of about 0.5 Angstrom.

It was captured at a solar minimum on a sunny day in the winter with a special telescope capable of reducing the sun's energy enough to be imaged by a camera.