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Greenland Ice Sheet Losing Mass
A new study of the mass of ice capping Greenland reveals that the giant ice sheet burying the island has rapidly lost mass in recent years due to melting and iceberg calving.
Cassini Significant Events 10/12/06 – 10/18/06
Cassini Significant Events 10/12/06 – 10/18/06 October 20, 2006 (Source: Cassini Project) The most recent spacecraft telemetry was acquired on Wednesday, Oct. 18, from the Madrid tracking complex. The Cassini spacecraft is in an excellent state of health and all…
Severe Thunderstorms over the Southeastern United States
Up to ten inches of rain fell over parts of Houston, Texas, between October 10 and October 17, 2006. The rain fell as a line of strong storms, fueled by moisture being pulled up from the Gulf of Mexico, swept…
Carbon Monoxide, Fires, and Air Pollution
Like the burning of gasoline in your car, fires release carbon monoxide, hydrocarbons (molecules made of carbon and hydrogen atoms), and nitrogen oxides—all of which, when exposed to sunlight, take part in the chemical reactions that create ground-level ozone. Unlike…
Tracking Nature’s Contribution to Pollution
Scientists combined models and satellite data to track the spread of pollutants from forest fires in Alaska and Canada in 2004. They discovered that fires can have a significant impact on air pollution far from the fires location.
Fires Scorch Cape Barren Island
Large Images:natural-color image (82 kb)infrared-enhanced image (82 kb)A trail of small islands connects the southeastern tip of Australia to Tasmania, to the south. A cluster of three large (in comparison to others in the chain) islands known as the Furneaux…
Sand Dunes in Har Nuur (Black Lake), Western Mongolia
Har Nuur (“Black Lake”) is located in western Mongolia’s Valley of Lakes, part of a system of closed basins stretching across central Asia. These basins are the remnants of larger paleolakes ( paleo- means “ancient”) that began to shrink approximately…
Super Star Clusters in the Antennae Galaxies
This new NASA Hubble Space Telescope image of the Antennae galaxies is the sharpest yet of this merging pair of galaxies. During the course of the collision, billions of stars will be formed. The brightest and most compact of these…
Sundarbans, Bangladesh
Stretching across part of southwestern Bangladesh and southeastern India, the Sundarbans is the largest remaining tract of mangrove forest in the world. The Sundarbans is a tapestry of waterways, mudflats, and forested islands at the edge of the Bay of…
“Chemical Weather Forecasts:” Carbon-Containing Particles
Carbon dioxide isn’t the only carbon-containing chemical that interests atmospheric and climate scientists. Every day, factories, vehicles, coal-burning power plants, and natural and agricultural fires churn out a steady stream of tiny, carbon-containing particles that also play a role in…
Amazon River in the Atlantic Ocean
Tiny streams trickle down the east side of the glacier-clad peaks of the Andes, converging in a series of small rivers. As the rivers flow together, they wind across 6,516 kilometers (4,049 miles) of dense forest to form the world’s…
Cassini Significant Events 10/05/06 – 10/11/06
Cassini Significant Events 10/05/06 – 10/11/06 October 13, 2006 (Source: Cassini Project) The most recent spacecraft telemetry was acquired Wednesday, Oct. 11,from the Goldstone tracking stations. The Cassini spacecraft is in anexcellent state of health and is operating normally. Information…
Sulfur Dioxide Cloud from Rabaul Volcano
On October 7, 2006, Rabaul Volcano on the northeastern tip of New Britain produced a large-scale eruption. According to ReliefWeb, the eruption shook windows and rained heavy ash and small stones on the city of Rabaul as authorities declared a…
Hubble Captures Galaxy in the Making
Images from NASA’s Hubble Space Telescope have provided a dramatic glimpse of a large and massive galaxy under assembly by the merging of smaller, lighter galaxies. Astrophysicists believe that this is the way galaxies grew in the young universe. Now,…
Diverse Terrain of Iran’s Dasht-e Lut
Dasht-e Lut is a large salt desert in southeastern Iran. The desert fills a low basin that stretches southward from the Khorasan province into the Kerman province.
Saturn’s Rings Show Evidence of a Modern-day Collision
Saturn’s Rings Show Evidence of a Modern-day Collision October 11, 2006 (Source: Jet Propulsion Laboratory/Space Science Institute) Saturn’s D ring — the innermost of the planet’s rings — sports an intriguing structure that appears to be a wavy, or “vertically…
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