Earth Observations taken by the Expedition 21 Crew

ISS021-E-015710 (27 Oct. 2009) --- Pearl Harbor, Hawaii is featured in this image photographed by an Expedition 21 crew member on the International Space Station. This detailed view illustrates the southern coastline of the Hawaiian island of Oahu including Pearl Harbor. On Dec. 7, 1941 ? 68 years ago ? a surprise attack by the Japanese Navy on Pearl Harbor and other targets on the island of Oahu precipitated the entry of the United States into World War II. Today, Pearl Harbor is still in use as a major United States Navy installation, and with Honolulu is one of the most heavily developed parts of the Island. Comparison between this image and a detailed astronaut photograph of Pearl Harbor taken in 2003 suggests that little observable land use or land cover change has occurred in the area over the past six years. The most significant change is the addition of more naval vessels to the Reserve Fleet anchorage in Middle Loch (center). The urban areas of Waipahu, Pearl City, and Aliamanu border the Harbor to the northwest, north, and east. The built-up areas, recognized by linear streets and white rooftops, contrast sharply with the reddish volcanic soils and green vegetated hillslopes of the surrounding areas.