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Measuring Vegetation (NDVI & EVI)
In an effort to monitor major fluctuations in vegetation and understand how they affect the environment scientist use satellite remote sensors to measure and map the density of green vegetation over the Earth. By carefully measuring the wavelengths and intensity…
Drought in the Rockies
This spring and summer the Rocky Mountains have been relatively dry.
Smoke in the Bitterroot Mountains
By late August 2000, severe forest fires had been burningin Montana and Idaho for more than a month. As of Aug. 29, a total of 57 fires were burning in both states. The smoke from thesefires is considered a health…
Drought: The Creeping Disaster
Though it is a gradual disaster, drought can have devastating effects on agriculture and water supplies, but monitoring and forecasts can allow people to take early actions that prevent harsh impacts later.
Land Use Across the U.S.-Mexico Border
This image of the U.S.-Mexico border in California was taken bythe Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER)on June 12, 2000. It covers an area of 24 by 30 km, with a resolution of 15meters per pixel (in the…
Montana Fires Animation
large animation (4.1MB)Wildfires in the western United States have consumed about 6 million acres of forestland, as of Aug. 25. In Montana alone, fires have consumed more than 600,000 acres and show no signs of letting up. Fire officials, calling…
Galileo Evidence Points to Possible Water World Under Europa’s Icy Crust
NASA researchers have the strongest evidence yet that one of Jupiter’s most mysterious moons hides an ocean of water underneath its icy coat.
Significant Event Report for Week Ending 8/25/2000
Cassini Significant Event Report For Week Ending 08/25/00 The most recent spacecraft telemetry was acquired from the Goldstone tracking station on Tuesday, 08/22. The Cassini spacecraft is in an excellent state of health and is operating normally. The speed of…
30 Years of Arctic Warming
Climate data show that winter temperatures in the northernmost regionsof the world have warmed alarmingly in a very short period. Parts ofAlaska and northern Eurasia, for example, have warmed by nearly 11degrees Fahrenheit in the winter months over the past…
Hubble Spies Brown Dwarfs in Nearby Stellar Nursery
Probing deep within a neighborhood stellar nursery, NASA’s Hubble Space Telescope uncovered a swarm of newborn brown dwarfs. The orbiting observatory’s near-infrared camera revealed about 50 of these objects throughout the Orion Nebula’s Trapezium cluster [image at right], about 1,500…
Hubble Takes Census of Elusive Brown Dwarf Stars
Astronomers using NASA’s Hubble Space Telescope have carried out the most complete inventory to date of brown dwarfs, one of the universe’s most elusive types of objects, which dwell in limbo between stars and planets. The Hubble census provides new…
Two Perspectives on Forest Fire
Multi-angle Imaging Spectroradiometer (MISR) images of smoke plumes fromwildfires in western Montana acquired on August 14, 2000. A portion of Flathead Lake isvisible at the top, and the Bitterroot Range traverses the images. Theleft view is from MISR’s vertical-viewing (nadir)…
One Typhoon and Two Hurricanes
The powerful super Typhoon Bilis hit Taiwan with 161 mph (260 kmh) windson August 22, 2000. At times, the winds were strong enough to shake concretebuildings. In addition to the wind, heavy rains may bring flooding andmudslides to the island.…
High-res View of the Montana Fires
This false-color image over the Bitterroot National Forest, Montana, wasmade using data acquired on Aug. 14 by Landsat 7’s Enhanced ThematicMapper plus (ETM+). As of Aug. 21, more than 200,000 acres (300 squaremiles) of the Bitterroot have burned and hundreds…
NASA Aeronautic Faces of Flight Videos
In recognition of National Aviation Day this year we present this collection of videos highlighting some of the Faces of Flight from the NASA Aeronautics family who contribute to transforming aviation for the 21st century.
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