26 Dec '11, 11pm

Cocos (Keeling) Islands [image] #NASA

The Cocos (Keeling) Islands lie in the eastern Indian Ocean, about 2,900 kilometers (1,800 miles) northwest of the Australian city of Perth. Comprised of coral atolls and islands, the archipelago includes North Keeling Island and the South Keeling Islands. The Advanced Land Imager (ALI) on NASA’s Earth Observing-1 (EO-1) satellite captured this natural-color image of South Keeling Islands on July 31, 2009. Coral atolls—which are largely composed of huge colonies of tiny animals such as cnidaria —form around islands. After the islands sink, the coral remains, generally forming complete or partial rings. Only some parts of South Keeling Islands still stand above the water surface. In the north, the ocean overtops the coral. Along the southern rim of this coral atoll, the shallow water appears aquamarine. Water darkens to navy blue as it deepens toward the central lagoon. Abo...

Full article: http://earthobservatory.nasa.gov/IOTD/view.php?id=76791&s...

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Cocos (Keeling) Islands: Coral, rock, silt, san...

earthobservatory.nasa.gov 26 Dec '11, 11pm

In 2005, the Australian government issued a report on the Cocos (Keeling) Islands, summarizing field research conducted be...

The beauty & complexity of coral atolls, as see...

earthobservatory.nasa.gov 27 Dec '11, 2pm

The Cocos (Keeling) Islands lie in the eastern Indian Ocean, about 2,900 kilometers (1,800 miles) northwest of the Austral...

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earthobservatory.nasa.gov 26 Dec '11, 12pm

After dark, a fiesta of lights provides the outline for Spain and Portugal. Read More

La península Ibérica de noche vista desde el es...

earthobservatory.nasa.gov 26 Dec '11, 10am

The city lights of Spain and Portugal define the Iberian Peninsula in this photograph from the International Space Station...

Iberian Peninsula at Night : Image of the Day #...

earthobservatory.nasa.gov 25 Dec '11, 11pm

The city lights of Spain and Portugal define the Iberian Peninsula in this photograph from the International Space Station...

Iberian Peninsula at Night [image] #NASA

earthobservatory.nasa.gov 25 Dec '11, 11pm

The city lights of Spain and Portugal define the Iberian Peninsula in this photograph from the International Space Station...

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earthobservatory.nasa.gov 26 Dec '11, 1pm

The city lights of Spain and Portugal define the Iberian Peninsula in this photograph from the International Space Station...

Volcanic Activity in the Red Sea : Image of the...

earthobservatory.nasa.gov 28 Dec '11, 2am

The activity in the Red Sea included more than an eruption. By December 23, 2011, what looked like a new island appeared i...

New island may be forming in the Red Sea. Lates...

earthobservatory.nasa.gov 27 Dec '11, 11pm

The activity in the Red Sea included more than an eruption. By December 23, 2011, what looked like a new island appeared i...

Do You See What They See [image] #NASA

earthobservatory.nasa.gov 23 Dec '11, 11pm

Only two sets of people can fly around the entire world in one night. One is rumored to reside at the North Pole; the othe...

Do You See What They See : Image of the Day

earthobservatory.nasa.gov 23 Dec '11, 11pm

Only two sets of people can fly around the entire world in one night. One is rumored to reside at the North Pole; the othe...

Love and Joy for the New Year: A comet rises in...

earthobservatory.nasa.gov 31 Dec '11, 11pm

In November and December 2011, professional and amateur astronomers reveled in observing a sun-grazing comet that dove clo...

Love and Joy for the New Year [image] #NASA

earthobservatory.nasa.gov 31 Dec '11, 11pm

In November and December 2011, professional and amateur astronomers reveled in observing a sun-grazing comet that dove clo...