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Lunar Soil Yields Evidence about Sun’s Dynamic Workings
Soil collected on the moon by Purdue University alumnus Eugene Cernan nearly 30 years ago has helped researchers at his alma mater and the University of California uncover new details about the workings of the sun.
Hurricane Iris Hits Belize
Hurricane Iris hit the small Central American country of Belize around midnight on October 8, 2001. At the time, Iris was the strongest Atlantic hurricane of the season, with sustained winds up to 225 kilometers per hour (140 mph). The…
Global Wind Speed
Global maps of average wind speed help researchers determine where to develop wind energy. Wind turbines (high-tech windmills) can generate power in places far from power plants and without an electricity grid—but planners need to know where there is sufficient…
Nelson River and Hudson Bay
Rivers that empty into large bodies of water can have a significantimpact on the thawing of nearshore winter ice. This true-color Moderate Resolution Imaging Spectroradiometer (MODIS)image from May 18, 2001, shows the Nelson River emptying spring runofffrom the Manitoba province…
St. Vincent Island, Apalachicola River Delta, Florida
Sand ridges ( cheniers ) sweep in bands across St. Vincent Island, about 120 kilometers southwest of Tallahassee, Florida. These ridges have accumulated over time in the Apalachicola River delta complex. During high flow, the river delivers abundant sediment to…
Cotopaxi Volcano, Ecuador
On February 19, 2000, Space Shuttle Endeavour passed over the highly activeand dangerous volcanic zone of the Andes in Equador. Endeavour was mappingelevations on most of the Earth’s land surface during theShuttle Radar Topography Mission (SRTM). There have beenmore than…
Phytoplankton off the Coast of Washington State
Clear weather over the Pacific Northwest yesterday gave the Sea-viewing Wide Field-of-view Sensor (SeaWiFS) a good view of this mountain region of the United States. Also, there are several phytoplankton blooms visible offshore. The white areas hugging the California coastline…
Gravitational Lens Helps Hubble and Keck Discover Galaxy Building Block
A very small, faint galaxy – possibly one of the long sought “building blocks” of present-day galaxies – has been discovered by a collaboration between NASA’s Hubble Space Telescope and the 10-meter Keck Telescopes at a tremendous distance of 13.4…
Ulysses Sees the Sun Begin to Quiet Down
Order is returning to the solar wind as the Sun begins to shake off the chaos that has characterised its behaviour during the recent peak in its 11-year activity cycle.
Significant Event Report for Week Ending 10/5/2001
Cassini Significant Event Report For Week Ending 10/05/01 The most recent spacecraft telemetry was acquired from the Goldstone tracking station on Saturday, September 29. The Cassini spacecraft is in an excellent state of health and is operating normally. Information on…
Cloud Height: Hurricane Juliette
A classical intense hurricane is shown in this view of Juliette,captured by the Multi-angle Imaging SpectroRadiometer (MISR) on September 26,2001. On the left is a true-color image produced by MISR’s nadir(vertical-viewing) camera. Impressive spiral arms wrapped around the eyeare apparent.…
Peering into the Core of a Globular Cluster
Astronomers have used NASA’s Hubble Space Telescope to peer into the center of a dense swarm of stars called Omega Centauri. Located some 17,000 light-years from Earth, Omega Centauri is a massive globular star cluster, containing several million stars swirling…
Changes in Arctic Ice
Largely natural “ups and downs” in a weather system centered nearIceland have contributed to regional variations and an overall decreasein Arctic sea ice cover over the last twenty years, according to newNASA research. As this semi-permanent low-pressure system intensifies and…
Center-Pivot Irrigation in Railroad Valley, NV
These Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER)images cover an area of 8 x 4 km in Railroad Valley,NV, and were acquired August 17, 2001. The top image shows center-pivotirrigated fields, with healthy vegetation in red. The middle imagedisplays…
Northern Greening
NASA satellite data suggest that for more than two decades there’s been a gradual greening of the northern latitudes of Earth. Researchers confirm that plant life seen above 40 degrees north latitude, which represents a line stretching from New York…
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