Figure 1.9

Auroras. (A) The aurora borealis is best viewed from northern locations, such as near Sudbury, Ontario, Canada, where this display was photographed. (B) This photo, from the orbiting International Space Station, shows the banded structure of aurora australis over the southern Indian Ocean on September 17, 2011. The solar panels and the body of the space station are visible in the upper portion of the photo.

(A. Mike Grandmaison/All CanadaPhotos/Getty Images; B. NASA)