Solar disks

A solar disk refers to the visible, bright surface of the Sun that we observe from Earth. It's the luminous, round area that appears as a glowing sphere in the sky during daytime. The solar disk's bright, seamless appearance is due to the Sun's hot, plasma-filled surface called the photosphere, emitting light. Its size and brightness can vary slightly due to solar activity or atmospheric effects, but typically, it maintains a consistent round shape. The solar disk is fundamental in studying solar phenomena like sunspots, solar flares, and eclipses, helping scientists understand our star’s behavior and influence on Earth.