2021年01月03日 A Phoenix Aurora over Iceland Image Credit & Copyright: Hallgrimur P. Helgason; Rollover Annotation: Judy Schmidt Explanation: All of the other aurora watchers had gone home. By 3:30 am in Iceland, on a quiet September night, much of that night’s auroras had died down. Suddenl […]
2021年01月02日 21st Century Wet Collodion Moon Image Credit & Copyright: Mike Smolinsky Explanation: In the mid 19th century, one of the first photographic technologies used to record the lunar surface was the wet-plate collodion process, notably employed by British astronomer Warren De la Rue. To
2020年12月31日 Trail of the Returner Image Credit & Copyright: Zhuoxiao Wang Explanation: Familiar stars of a northern winter’s night shine in this night skyview, taken near Zhangye, Gansu, China and the border with Inner Mongolia. During the early hours of December 17 Orion is near center i
