In the center, from up to down: Blenheim Reef, Solomon Islands and Victory Bank in the Chagos Archipelago as seen during STS-49 mission. Also visible: part of Peros Banhos Atoll in the lower left corner, Nelsons Island in the lower right corner; Speakers bank barely visible in the upper left part.
NASA
<a rel="nofollow" class="external text" href="http://eol.jsc.nasa.gov/SearchPhotos/photo.pl?mission=STS049&amp;roll=71&amp;frame=85">STS049-71-85</a>