site stats
In 1881, the Harvard Observatory director was frustrated with his staff, and would say "My Scottish maid could do better!" He hired his Scottish maid. Williamina Fleming classified tens of thousands of stars, discovered white dwarfs & the Horsehead nebula
发布时间:
1
数据加载中
Markdown支持
评论加载中...
您可能感兴趣的: 更多