1490 Ch’ing-yang Meteor Shower
1490 Ch’ing-yang Meteor Shower The Ch’ing-yang event of 1490 (1490 年 慶陽 事件), also known as the Chi-ing-yang meteor shower (Qingyang, 陽 流星 雨), was … Read more
1490 Ch’ing-yang Meteor Shower The Ch’ing-yang event of 1490 (1490 年 慶陽 事件), also known as the Chi-ing-yang meteor shower (Qingyang, 陽 流星 雨), was … Read more
An Introduction to Science and Civilization in China