An incandescent, transparent layer of gas, primarily hydrogen, several thousand miles in depth, lying above and surrounding the photosphere of a star, such as the sun, but distinctly separate from the corona.

• 太阳的色球层白热的透明气体层，主要是氢气，有几千英里厚，在恒星（如太阳）的光球外围和四周，但同日冕可以清楚地分开