Answer | Crossword Clue |
---|---|
umbra | The dark central part of a sunspot |
umbral | the dark central portion of a sunspot |
umbras | the dark central portion of a sunspot |
umbrae | the dark central portion of a sunspot |
penumbral | shaded region surrounding the dark central portion of a sunspot |
penumbrae | The less dark outer part of a sunspot, surrounding the dark core |
penumbras | The less dark outer part of a sunspot, surrounding the dark core |