Page:A Voyage in Space (1913).djvu/235

Rh series of pictures to show us at what a great rate they are moving about. Even in a few seconds the pattern becomes quite differently arranged, as you can see by comparing one of M. Hansky's pictures with another.

They must be moving with great speed, some of them perhaps at 100 miles per second. We saw an instance of a great solar storm observed by Carrington and Hodgson; but we now begin to realize that the whole surface of the Sun is in a state of constant turmoil. We get another proof of this fact if we look at the edges