The stellar equivalent of a sunspot: a region of enhanced magnetic field strength and low surface brightness. The existence of starspots explains certain types of variability, as occurs for example in a BY Draconis or RS Canum Venaticorum star.
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。