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Education
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Reading Satellite Images
Objectives Students will: 1. Understand how satellite images are made by active, passive, and remote sensing instruments. 2. Understand that analyzing satellite images reveal features and events that would be impossible to detect with other means of ana...
Eyes on Saddam
as the as the Predator and Global Hawk unmanned aerial vehicles (UAVs). Space systems include the advanced KH-11 electro-optical satellites, the ONYX radar imagery satellite, and, possibly, one or more MISTY stealth satellites. (Note 2) Not only has there been an...
'Dinosaur-Killer' Asteroid Crater Imaged for First Time
Imaged for First Time National Geographic News March 7, 2003 A high-resolution map from NASA's Shuttle Radar Topography Mission (SRTM), released yesterday, has provided the most telling visible evidence to date of a 112-mile (180-kilometer) wide, 3,000-foot (900-mete...
Smart Growth Pros and Cons
high-income nations and urban densities have been falling at an even greater rate in Europe and Canada. [1] www.demographia.com/db-urb&rpk.htm. [2] See: Wendell Cox and Joshua Utt, The Costs of Sprawl Reconsidered: What the Data Really Shows De...
Data Visualization Links
National Oceanic and Atmospheric Administration: Satellite Homepage (more info) IRI/LDEO Climate Data Library (more info) Has lots of data sets related to Earth science. Take your time while browsing through this site to get a true feeling of available data. Weather Unde...
Science, Technology and the CIA
reconnaissance satellite in space), and CORONA’s limited resolution. The inevitable lag between acquisition of an image and its return to earth and transformation into intelligence was undoubtedly apparent to Taylor. The need for...
Geographic Information Systems
screen. Different projections are used for different types of maps because each projection is particularly appropriate for certain uses. For example, a projection that accurately represents the shapes of the continents will distort their relative sizes. Since muc...
Domes of Destruction (DAAC Study)
flow. Ash and hot gas then formed an eruption column. (Image adapted from the USGS Volcano Hazards Program. A new browser window will open.) Taken on December 28, 2000, this composite ASTER image shows the active Russian volcano Bezymianny. The volcano's topography appea...
Pictures of Earth from Mars
Galilean satellite, Io, was behind Jupiter as seen from Mars. This image has been specially processed to show both Jupiter and its satellites, because Jupiter was much brighter than its moons. Mars Global Surveyor, one of the most successful missions to Mars ever undertak...
A Lot Less Snow
Dr. Hall noted that the key difference between the MODIS-produced snow maps and the images produced by NOAA/NESDIS is that "MODIS has a higher resolution and an improved ability to discriminate between snow and clouds." Left: A MODIS image of...
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