What is the Center Portion of a Sunspot Called? Understanding the Sun’s Magnetic Activity
If you’ve ever looked up at the sun and saw something that resembled a dark blotch, then you’ve probably seen a sunspot. A sunspot is a temporary occurrence on the sun’s surface and is usually comprised of two main parts, the “umbra” and the “penumbra.” The umbra is the center portion of a sunspot and … Read more