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Landsat 7 – First Cloud-free Image of Yellowstone National Park
This image of Yellowstone Lake, in the center of Yellowstone National Park, was taken by Landsat 7 on July 13, 1999. Bands 5 (1.65µm),4 (.825µm), and 2 (.565µm) were used for red, green, and blue, respectively. Water appears blue/black, snow…
Milutin Milankovitch
The Serbian astrophysicist Milutin Milankovitch is best known for developing one of the most significant theories relating Earth motions and long-term climate change. He dedicated his career to developing a mathematical theory of climate based on the seasonal and latitudinal…
Earth’s Orbital Precession
Precession—the change in orientation of the Earth’s rotational axis—alters the orientation of the Earth with respect to perihelion and aphelion.
Significant Event Report for Week Ending 3/24/2000
Cassini Significant Event Report For Week Ending 03/24/00 The most recent spacecraft telemetry data was acquired from the Madridtracking station on Wednesday, 03/22. The Cassini spacecraft is in anexcellent state of health and is operating normally. The speed of the…
MISR Instrument Animations
No instrument like the Multi-angle Imaging SpectroRadiometer (MISR) has flown in space before. Viewing the sunlit Earth simultaneously at nine widely spaced angles, MISR collects global images with high spatial detail in four colors at every angle.
Hurricane Floyd: Fearing the Worst
In the wake of Hurricane Floyd, polluted runoff threatened North Carolina’s rivers and beaches.
First ASTER Visible/Near-Infrared Image
A key instrument on NASA’s new Earth-observing Terra satellite observed the San Francisco River region of Brazil.
CERES First Light Images
The two CERES instruments on Terra successfully opened their contamination cover doors on Friday, February 25. A few hours later, they began to scan the Earth, making measurements of the reflected solar flux and emitted terrestrial flux that make up…
Hubble Finds Young Stars in Cosmic Dance
A trio of newborn stars, 1,400 light-years away are taking part in a complex dance, as revealed by recent NASA Hubble Space Telescope (HST) observations. Two are now closely embracing each other, while the third has parted from their company.…
Significant Event Report for Week Ending 3/16/2000
Cassini Significant Event Report For Week Ending 03/16/00 The most recent spacecraft telemetry data was acquired from the Goldstonetracking station on Wednesday, 03/15. The Cassini spacecraft is in anexcellent state of health and is operating normally. The speed of the…
MOPITT First Light Image
MOPITT measures radiances in several channels to determine the amount of carbon monoxide (CO) and methane in the atmosphere. Channel 1 Difference radiances, shown here, are sensitive to the temperature of the earth’s surface, the temperature of the atmosphere, and…
MISR First Light Image
First light over James Bay, Ontario, Canada, acquired by NASA’s Multi-angle ImagingSpectroRadiometer on February 24, 2000, shows this winter landscape from three of the instrument’s nine cameras. The image at left captures the opening of MISR’s cover and was recorded…
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