Page:Popular Science Monthly Volume 87.djvu/231

From Wikisource

Jump to: navigation, search

This page has been validated.

PSM V87 D231 Planetary nebula ngc 2392.png

Fig. 7a. Planetary Nebula, N. G. C. 2.392. Photographed at the Lick Observatory.

PSM V87 D231 Planetary nebula ngc 40.png

Fig. 7b. Planetary Nebula, N. G. C. 40. Photographed at the Lick Observatory.

Retrieved from "http://en.wikisource.org/w/index.php?title=Page:Popular_Science_Monthly_Volume_87.djvu/231&oldid=4410882"

Validated