| ISS020 Earth Sciences and Image Analysis Photographic Highlights |
| TOP PICKS |
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| ISS020-E-16279 |
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| Millennium Island, Kiribati: Millennium Island—known as
Caroline Island prior to 2000—is located at the southern end of the
Line Islands in the South Pacific Ocean. This uninhabited island is
part of the Republic of Kiribati, an island nation comprised of 32
atolls (including Millennium Island) and one raised coral island.
Millennium Island is formed from a number of smaller islets built on
coral reefs. The coral reefs grew around a now-submerged volcanic
peak, leaving a ring of coral around an inner lagoon. The islands
above the waterline are composed primarily of limestone rock and sand
derived from the reefs. At a maximum height of approximately 6 meters
(19.7 feet) above sea level, Millennium Island has been identified as
being at great risk from sea level rise by the United Nations. The islets of Millennium Island are readily visible in this astronaut photograph as irregular green vegetated areas surrounding the inner lagoon. The shallow lagoon waters are a lighter blue than the deeper surrounding ocean water; tan linear “fingers” within the lagoon are the tops of corals. The two largest islets are Nake Islet and South Islet, located at the north and south ends of Millennium Island respectively. The ecosystem of Millennium Island is considered to be relatively pristine despite periods of human habitation, guano mining, and agricultural activities, and the island has been recommended as both a World Heritage site and Biosphere Reserve. |
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This service is provided by the International Space Station program and the JSC Astromaterials Research & Exploration Science Directorate. Recommended Citation: Image Science and Analysis Laboratory, NASA-Johnson Space Center. "The Gateway to Astronaut Photography of Earth." . |
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