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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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A vortex of lighter green p...
Summer blooms in the Baltic
Susitna Glacier, Alaska. Like rivers of liquid water, glaciers flow downhill, with tributaries joining to form larger rivers. But where water rushes, ice crawls. As a result, glaciers gather dust and dirt, and bear long-lasting evidence of past movements. Alaska’s Susitna Glacier reveals some of its long, grinding journey in this image, taken from space on August 27, 2009. The satellite image combines infrared, red and green wavelengths to form a false-color picture. Vegetation is red and the glacier’s surface is marbled with dirt-free blue ice and dirt-coated brown ice. Infusions of relatively clean ice push in from tributaries in the north. The glacier surface appears especially complicated near the center of the image, where a tributary has pushed the ice in the main glacier slightly southward. In the lower left corner of this image, meltwater lakes can be seen on top of the ice.
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Like rivers of liquid water...
Susitna Glacier
This scar on an arid landscape is the dry riverbed of the Ghadamis River in the Tinrhert Hamada Mountains near Ghadamis, Libya. This image was acquired by the Landsat 7 satellite on November 6, 2000. This is a false-color composite image made using near-infrared, green, and blue wavelengths. The image has also been sharpened using the sensor’s panchromatic band.
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Ghadamis River in Libya
Ghadamis River in Libya
Earth and its Moon are nicely framed in this image taken from the aft windows of the Space Shuttle Discovery in 1998. Discovery, on mission STS-95, was flying over the Atlantic Ocean at the time this image was taken.
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MOON FRAME: Earth and its M...
Moon frame
In this image, it’s hard to get a sense of scale or of what we’re actually looking at. This picture, taken by the Landsat-5 satellite on 8 April, 1985, shows sand dunes (yellow streaks) that extend from Algeria into Mauritania in northwest Africa. These wind-blown sand ridges make up Erg Iguidi, one of the Sahara’s ‘sand seas’ in which individual dunes are often more than a third of a mile (500 meters) wide and tall.
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Sea of Sand
Sea of sand
This beautiful image, taken on 11 January 2001, shows a geological formation in the Maur Adrar Desert in Mauritania, Africa. Known as the "Richat Structure," this snail-shell-like formation was created when a volcanic dome hardened and gradually eroded, exposing onion-like layers of rock.
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Geologic Delight
Geologic delight
A changing landscape in the heart of Madagascar, showing drainage into the sea in the Betsiboka Estuary due to decimation of rainforests and coastal mangroves. 
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The heart of Madagascar
The heart of Madagascar
​ A spring phytoplankton bloom off of the Alaskan coast.
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Churning in the Chukchi Sea
Churning in the Chukchi Sea
This photo, taken on January 22, 2001 by the Landsat-7 satellite, shows Akpatok Island, which lies in Ungava Bay in Canada. Accessible only by air, Akpatok Island rises out of the water as sheer cliffs that soar 500 to 800 feet (150 to 243 meters) above the sea surface. The island is an important sanctuary for cliff-nesting seabirds. Numerous ice floes around the island attract walruses and whales, making Akpatok a traditional hunting ground for native Inuit people.
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Akpatok Island
Akpatok Island
This image, taken on January 21, 2005, shows a collision between two of the largest floating objects in the world, the Drygalski Ice Tongue and iceberg "B15-A" in Antarctica (B15-A is on the right). The 43-mile- (70-kilometer-) long Drygalski Ice Tongue juts out from the icy land of Antarctica into McMurdo Sound like a pier, and is a floating extension of the land-based David Glacier. B15-A, 75 miles (120 kilometers) long, had been drifting slowly towards Drygalski for months before this image was taken. The presence of B15-A complicated supply trips to the nearby McMurdo science base and endangered penguins in the area by blocking their access to open sea. The perspective we get from space allows us to see the scale and scope of changes to these massive bodies of ice that we could not see in any other way.
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Drygalski Ice Tongue, Antar...
Drygalski Ice Tongue, Antarctica
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
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
Byrd Glacier, Antarctica, is a 15-mile- (24-kilometer-) wide, 100-mile- (161-kilometer-) long ice stream that plunges through a deep valley in the Transatlantic Mountains and into the Ross Ice Shelf. It moves towards the sea at a rate of about half a mile (0.8 kilometers) per year. This snapshot of the glacier was taken on January 11, 2000.
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Byrd Glacier is a 15-mile- ...
Byrd Glacier
This false-color image shows snow-capped peaks and ridges of the eastern Himalayas between major rivers in southwest China. The Himalayas are made up of three parallel mountain ranges that together stretch for more than 1800 miles (2,900 kilometers). This particular image was taken by NASA’s Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER), flying aboard the Terra satellite, on February 27, 2002. The picture is a composite made by combining near-infrared, red and green wavelengths.
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Himalayas
The Himalayas
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
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
As part of the Arctic Boreal Vulnerability Experiment (ABoVE), NASA scientists are flying over Alaska and Canada, measuring the elevation of rivers and lakes to study how thawing permafrost affects hydrology in the landscape.
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As part of the Arctic Borea...
Kuskokwim River
Curling snow drifts are magnified by the terrain around the 1,400 mile Dnieper (Dnipro) River, flowing from Russia to the Black Sea.
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The wild, frozen Dnieper (D...
The wild, frozen Dnieper (Dnipro) River
Like distant galaxies amid clouds of interstellar dust, chunks of sea ice drift through graceful swirls of grease ice in the frigid waters of Foxe Basin in the Canadian Arctic.
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Ice Stars
Ice Stars
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
These night-shining clouds were spotted over Billund, Denmark on July 15, 2010. These rare clouds are technically called "noctilucent" or "polar mesospheric" clouds, and form at high altitudes, 80 to 85 kilometers (50 to 53 miles) high, where the mesosphere is located. The clouds' high position in the atmosphere allows them to reflect sunlight long after the sun has dropped below the horizon. They only form when the temperature drops below –130 degrees Celsius (-200 degrees Fahrenheit), whereupon the scant amount of water high in the atmosphere freezes into ice clouds. This happens most often in countries at high northern and southern latitudes (above 50 degrees) in the summer, when the mesosphere is coldest. Studies suggest that night-shining clouds are becoming brighter and more common, which is linked to the mesosphere getting colder and more humid. These changes may be happening because of increased levels of heat-trapping greenhouse gases such as carbon dioxide and methane in the atmosphere. In the mesosphere, carbon dioxide radiates heat into space, causing cooling. More methane, on the other hand, puts more water vapor into the atmosphere, because sunlight breaks methane up into water molecules at high altitudes. Research is ongoing.
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Nocturnal Wonders
Nocturnal wonders
February 12, 1984: Mission specialist Bruce McCandless II ventures further away from the confines and safety of his ship than any previous astronaut has ever been. This space first was made possible by the Manned Manuevering Unit or MMU, a nitrogen jet-propelled backpack. After a series of test maneuvers inside and above Challenger's payload bay, McCandless went 'free-flying' to a distance of 320 feet away from the Orbiter. This stunning orbital panorama view shows McCandless out there amongst the black and blue of Earth and space.
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TO BOLDLY GO: February 12, ...
To boldly go
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
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
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

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Images of Change

Images of Change

Explore a stunning gallery of before-and-after images of Earth from land and space that reveal our home planet in a state of flux.
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Climate Time Machine

Climate Time Machine

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Track Earth's vital signs from space and fly along with NASA's Earth-observing satellites in an interactive 3D visualization.
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Global Ice Viewer

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Earth's ice cover is shrinking. See how climate change has affected glaciers, sea ice, and continental ice sheets.
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