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Modeling Earth’s Land Biosphere
A NASA-affiliated research team constructed a computer model of the Earth’s terrestrial biosphere that will teach us a great deal about the dynamic interactions between land plants and the lower atmosphere.
Iceberg B10A Calving
More than a decade ago a large iceberg (over a thousand square miles in area, and a quarter of a mile thick) broke off an Antarctic glacier and drifted into the Southern Ocean. The National Iceberg Center, which monitors sea…
Significant Event Report for Week Ending 9/10/1999
Cassini Significant Event Report For Week Ending 09/10/99 Spacecraft Status: The most recent spacecraft status is from the Deep Space Newtork (DSN) tracking pass on Thursday, 09/09, over the Canberra tracking station. The Cassinispacecraft is in an excellent state of…
An Introduction to Climate Modeling
In their ongoing endeavor to understand our planet as a whole system, Earth scientists are increasingly using computer models to help them visualize the causes and effects of climate and environmental change. These models serve as predictive tools that allow…
Significant Event Report for Week Ending 9/3/1999
Cassini Significant Event Report For Week Ending 09/03/99 Spacecraft Status: The most recent spacecraft status is from the DSN tracking pass onThursday, 09/02, over the Goldstone tracking station. The Cassinispacecraft is in an excellent state of health and is operating…
A Minuet of Galaxies
This troupe of four galaxies, known as Hickson Compact Group 87 (HCG 87), is performing an intricate dance orchestrated by the mutual gravitational forces acting between them. The dance is a slow, graceful minuet, occurring over a time span of…
Northern California Fires
Smoke from several large forest fires blanketed areas of Northern California in late summer, 1999.
Hurricane Dennis
Hurricane Dennis moved slowly north along the North Carolina coast on August 30, 1999, but the eye didn’t cross over land. Although thisresulted in relatively light damage, high winds and tidal surges eroded beaches and knocked out power to tens…
Famed NASA Pioneer Project Manager Charles Hall Dead at 79
Charles (Charlie) F. Hall, manager of three of NASA’s most daring and exciting early scientific space missions, died August 26 in a Mountain View, CA hospital following a brief illness.
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Descobertas, missões espaciais, pesquisas e avanços tecnológicos da agência espacial americana.