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Melt Ponds on Greenland’s Ice Cap
Thinner than the 2.3-kilometer-thick center, the outer edges of the Greenland ice sheet develop melt zones like the one shown here during the warm summer months.
Melting Days on Greenland
Greenland is the world’s largest island, containing the second largest ice sheet on Earth, with a surface extent of approximately 1.75 million square kilometers and an average thickness of 2.3 kilometers (1.6 miles). Greenland’s ice sheet is the Northern Hemisphere’s…
Cassini Significant Events 03/28/07 – 04/03/07
Cassini Significant Events 03/28/07 – 04/03/07 April 6, 2007 (Source: Cassini Project) The most recent spacecraft telemetry was acquired on Tuesday, April 3, from the Goldstone tracking complex. The Cassini spacecraft is in an excellent state of health and all…
Springtime Aerosols over Eastern Asia
March 31, 2007, marked opening ceremonies for the first “Green China Day,” established to increase awareness of the need for environmental protection. As reported by ShanghaiDaily.com, however, the ceremony in Beijing saw an unwelcome guest: Gobi Desert dust. Roughly 2,000…
Countdown to Dawn
A high school guidance counselor told Jennifer Rocca that aerospace engineering was not a field for women. Luckily, the future systems engineer for the Dawn mission wasn’t convinced.
Magnitude 8.1 Earthquake off the Solomon Islands
On April 1, 2007, a magnitude 8.1 earthquake rattled the Solomon Islands, 2,145 kilometers (1,330 miles) northeast of Brisbane, Australia. Centered less than ten kilometers beneath the Earth’s surface, the earthquake displaced enough water in the ocean above to trigger…
Fires and Thick Smoke Across Southeast Asia
Vehicles and power plants are not the only sources of air pollution and greenhouses gases: fires contribute, too. In the Northern Hemisphere spring, which is the end of dry season across much of Southeast Asia, thousands of fires burn each…
Hubble’s View of Barred Spiral Galaxy NGC 1672
This NASA Hubble Space Telescope view of the nearby barred spiral galaxy NGC 1672 unveils details in the galaxy’s star-forming clouds and dark bands of interstellar dust. One of the most striking features is the dust lanes that extend away…
Montevideo, Uruguay
Reflective roofing materials and dark asphalt streets outline the urban grid pattern of Uruguay’s capital city, Montevideo, in this astronaut photograph. The city may be viewed as a precursor of a global population shift from dominantly rural to urban environments,…
Landsat – Protecting the Price of Bread
It was a grain shortage 35 years ago that initially led FAS to use Landsat data.
Byrd Glacier, Antarctica
The Byrd Glacier plunges through a deep, 15-mile-wide valley in the Transatlantic Mountains to create a 100-mile-long, rock-floored ice stream.
Deforestation in Rondonia, Brazil
This pair of images reveals how dramatically and rapidly the Amazon can be transformed. The images compare deforested areas (tan) to forest (green) in 2000 (top) versus 2006 (bottom). The area, which is in southern Rondônia southwest of the Pacaás…
Tropical Deforestation
Tropical forests are home to half the Earth’s species, and their trees are an immense standing reservoir of carbon. Deforestation will have increasingly serious consequences for biodiversity, humans, and climate.
Eruption of Shiveluch Volcano, Kamchatka Peninsula
Satellites usually capture images of volcanic ash plumes as they are blowing away. This image is different.
River Plumes Threaten Great Barrier Reef
In late February 2007, NASA satellite images revealed that even the outer portions of the Australia’s Great Barrier Reef can be bathed in land-based pollution carried far offshore by plumes of river water. Conventional thinking was that river plumes affected…
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