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The heart of Madagascar

The heart of Madagascar

As the International Space Station flew overhead, NASA astronaut Ricky Arnold captured this photograph of a changing landscape in the heart of Madagascar, observing drainage into the sea in the Betsiboka Estuary due to decimation of rainforests and coastal mangroves.

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NASA

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Bombetoka Bay in northwestern Madagascar is an inlet of Mozambique Channel, and is at the mouth of the Betsiboka River. Just downstream is the second largest port of Madagascar, the town of Mahajanga, a road terminus and trade center that exports sugar, coffee, spices, cassava, vegetable oils, timber and vanilla. The surrounding area abounds in extensive coffee plantations. Simulated natural color image taken by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) on August 23, 2000.
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BOMBETOKA BAY: Bombetoka Ba...
Bombetoka Bay
This image, taken on 10 May 2001, shows one of the islands of New Caledonia, an archipelago 1200 kilometers (750 miles) east of Australia. New Caledonia contains the world’s third-largest coral reef structure, and its coral reefs support an unusually large diversity of species, including many predators, big fish, turtles, and the world’s third-largest dugong population. (Dugongs are large marine mammals.) In this natural-color image, the islands appear in shades of green and brown — mixtures of vegetation and bare ground. The surrounding waters range from pale aquamarine to deep blue, and the color differences reflect varying water depths. Over coral reef ridges and sand bars, the water is shallowest and palest in color.
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Blue Lagoon
Blue lagoon
The Sierra de Velasco Mountains dominate this image in northern Argentina. The Catamarca province is in the northern part of the image, and the La Rioja province is to the south. The streams are fed by runoff from the snow in the Andes Mountains to the north. These intermittent streams can dry up rapidly. The larger urban area near the bottom of the image is La Rioja, the capital of the province of La Rioja. This image was acquired by the Landsat 5 satellite on February 28, 1985.
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Argentina
Argentina
La NASA no estudia solo las estrellas y los planetas; también le preocupa la tierra debajo de tus pies.
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La humedad de la Tierra
La humedad de la Tierra
With autumn's arrival, chlorophyll begins to cede its dominance in the photosynthetic process, revealing yellow and orange tones on land, while in the ocean and lakes, phytoplankton pigments highlight different water masses and current systems.
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Changing colors across land...
Photosynthetic pigments by land and sea
This image shows a spinning formation of ice, clouds and low-lying fog off the eastern coast of Greenland. This image was acquired by the Landsat 7 satellite on May 14, 2001. This is a false-color composite image made using infrared, red and green wavelengths.
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Whirlpool
Whirlpool
From NASA's Operation IceBridge campaign in Alaska: A high altitude view of Icy Bay, in the Wrangell-Saint Elias Wilderness. Just a century ago, this body of water was covered in ice.
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Icy Bay, Alaska
Icy Bay, Alaska
Salinity plays a major role in global ocean circulation and changes in salinity may impact regional and global climates. NASA's Aquarius mission is painting a global picture of our planet's salty waters.
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Salinity plays a major role...
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A series of rocky outcroppings are a prominent feature of this Sahara Desert landscape near the Terkezi Oasis in the country of Chad. This image was taken by the Landsat 7 satellite on October 22, 2000. It is a false-color composite image made using near infrared, green, and red wavelengths. The image has also been sharpened using the sensor's panchromatic band.
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Terkezi Oasis
Terkezi Oasis
This stunning image of the northwest corner of Australia was snapped by a student on Earth after remotely controlling the Sally Ride EarthKAM aboard the International Space Station.
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Northwest Australia from th...
Northwest Australia from the Space Station
This simulated natural color image shows the Coco River, between Nicaragua and Honduras, as seen from space on December 5, 2002. As it makes its way to the Caribbean Sea, the Coco River forms the border between the two countries. The coastline, known as the Mosquito Coast, is of low relief and has plentiful water bodies, relic shorelines and high temperatures. Mosquito Coast derives its name from its principal inhabitants, the Miskito Indians, whose name was corrupted into Mosquito by European settlers. The Mosquito Indians, of whom there are several tribes, are short in stature and very dark-skinned. The first European settlement in the Mosquito country started in 1630, when agents of the English-chartered Providence Company established friendly relations with the local inhabitants. The image shown covers an area of 29 x 39 kilometers (18 x 24 miles).
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This simulated natural colo...
Coco River, Nicaragua and Honduras
The tongue of the Malaspina Glacier, the largest glacier in Alaska, fills most of this image. The Malaspina lies west of Yakutat Bay and covers 1,500 square miles (about 3,880 square kilometers). Image taken by Landsat 7 on August 31, 2000.
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ALASKAN SHIMMERThe tongue o...
Alaskan shimmer
Guinea-Bissau is a small country in West Africa. Complex patterns can be seen in the shallow waters along its coastline, where silt carried by the Geba and other rivers washes out into the Atlantic Ocean. Image taken by Landsat 7 on December 1, 2000.
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GUINEA-BISSAU COAST: Guinea...
Guinea-Bissau coast
On the edge of the Kalahari Desert in Namibia, sand dunes are encroaching onto once-fertile lands in the north. Healthy vegetation appears red in this image; in the center, notice the lone red dot. It is the result of a center-pivot irrigation system, evidence that at least one optimistic farmer continues to work the fields despite the approaching sand. This image was acquired by the Landsat 7 satellite on August 14, 2000. This is a false-color composite image made using near infrared, red and green wavelengths. The image has also been sharpened using the sensor's panchromatic band.
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"The Optimist," Kalahari De...
'The Optimist,' Kalahari Desert, Namibia
Off the coast of Argentina, strong ocean currents stirred up a colorful brew of floating nutrients and microscopic plant life just in time for the summer solstice. Image taken by the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Aqua satellite on December 21, 2010.
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PATAGONIA BLOOMS: Off the c...
Patagonia blooms
This image, taken in February 1984, shows the confluence of the Parana and Paraguay Rivers northeast of the town of Corrientes, in Argentina. The Parana is South America's second largest river (the Amazon being the largest), and the river and its tributaries are important transportation routes for landlocked cities in Argentina, Paraguay, Bolivia and Brazil. Both the Parana and Paraguay Rivers are loaded with sediment; the Paraguay (left) contains a tan sediment and the Parana (right) contains a reddish-brown muddy sediment. As the two rivers merge in the center of the photo and begin to flow southwest, we see how their sediments remain fairly unmixed for many miles downstream. Original high-resolution image here.
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This image, taken in Februa...
Paraná River, Argentina and Paraguay
These are the Anti-Atlas Mountains, part of the Atlas Mountain range in southern Morocco, Africa. The region contains some of the world’s largest and most diverse mineral resources, most of which are still untouched. This image was acquired by the Landsat 7 satellite on June 22, 2001. This is a false-color composite image made using shortwave infrared, infrared and red wavelengths.
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Atlas Mountains
Atlas Mountains
This image, captured by the Landsat-8 satellite, shows the view over Western Australia on May 12, 2013. The image shows rich sediment and nutrient patterns in a tropical estuary area and complex patterns and conditions in vegetated areas.  The image is enhanced and involved masking, separately enhancing and then reassembling water and land portions of the image. The water patterns are the result of an RGB display of Landsat-8’s red, blue, and ultra-blue bands. Land is shown using short-wavelength-infrared, near-infrared and green. 
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Color Explosion
Color explosion
Nicknamed “Dragon Lake,” this body of water is formed by the Bratskove Reservoir, built along the Angara River in southern Siberia, near the city of Bratsk. This image was acquired in winter, when the lake is frozen. This image was acquired by the Landsat satellite on December 19, 1999. This is a natural color composite image made using blue, green and red wavelengths.
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Dragon Lake, Siberia
Dragon Lake, Siberia
NASA's Landsat 8 satellite captured water mixing between Georgia's ick-colored Suwannee River and the deep blue Gulf of Mexico.
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Suwannee blackwater river m...
Suwannee blackwater river meets the sea
Aprende cómo circula el agua por nuestro planeta. Además, el archivo descargable incluye una página con definiciones de términos.
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EL CICLO DEL AGUA
Página de colorear: El ciclo del agua
Ephemeral Lake Carnegie, in Western Australia, fills with water only during periods of significant rainfall. In dry years, it is reduced to a muddy marsh. This image was acquired by the Landsat 7 satellite on May 19, 1999. This is a false-color composite image made using shortwave infrared, infrared and red wavelengths. The image has also been sharpened using the sensor's panchromatic band.
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Lake Carnegie, in Western A...
Lake Carnegie
Every summer, phytoplankton spread across the North Atlantic, with blooms spanning hundreds and sometimes thousands of miles. Blooms off Scandinavia seem to be particularly intense in summer 2018.
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Summer blooms in the Baltic
This spectacular 'blue marble' image is the most detailed true-color image of the entire Earth to date. Using a collection of satellite-based observations, scientists and visualizers stitched together months of observations of the land surface, oceans, sea ice, and clouds into a seamless, true-color mosaic of every square kilometer (0.4 square miles) of our planet. Much of the information contained in this image came from NASA’s Moderate Resolution Imaging Spectroradiometer (MODIS) onboard the Terra satellite. Visualization date: August 2, 2002.
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BLUE MARBLE: This spectacul...
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Earth's city lights as seen from space. The brightest areas of the Earth are the most urbanized, but not necessarily the most populated. More than a century after the invention of the electric light, many parts of the planet remain thinly populated and unlit. Image created with data from the Defense Meteorological Satellite Program Operational Linescan System.
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NIGHT LIGHTS: Earth's city ...
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