Page:Popular Science Monthly Volume 87.djvu/235

From Wikisource
Jump to navigation Jump to search
This page has been validated.

Fig. 9. Spiral Nebula in Canum Venaticorum, M. 51. Photographed at the Lick Observatory.

Retrieved from "https://en.wikisource.org/w/index.php?title=Page:Popular_Science_Monthly_Volume_87.djvu/235&oldid=7421689"