17世纪的开普勒草图提供了对太阳黑子周期和太阳变化的见解，早于现有的1610年记录。 17th-century Kepler sketches provide insights into sunspot cycles and solar variability, predating existing 1610 records.

天文学家约翰内斯·开普勒（Johannes Kepler）在17世纪的草图为太阳的历史行为提供了新的见解，帮助科学家理解太阳黑子周期和太阳的变化。 17th-century sketches by astronomer Johannes Kepler offer new insights into the sun's historical behavior, helping scientists understand sunspot cycles and the variability of the sun. 开普勒 1607 年用暗箱绘制的图画早于 1610 年以来现有的望远镜太阳黑子记录。 Kepler's 1607 drawings, made with a camera obscura, predate existing telescopic sunspot records from 1610.