NASA astronaut image of Penrhyn Atoll (Cook Islands) in the Pacific Ocean
NASA
<a rel="nofollow" class="external free" href="http://eol.jsc.nasa.gov/scripts/sseop/photo.pl?mission=STS51I&amp;roll=31&amp;frame=21">http://eol.jsc.nasa.gov/scripts/sseop/photo.pl?mission=STS51I&amp;roll=31&amp;frame=21</a>, cropped and rotated