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Lost and Found: Hubble Finds
| Title |
Lost and Found: Hubble Finds Much of the Universe's Missing Hydrogen |
|
Astronomers Find Smallest Ex
| Title |
Astronomers Find Smallest Extrasolar Planet Yet Around Normal Star |
|
United States Median Center
| Title |
United States Median Center of Population, 1880-2000 (WMS) |
| Abstract |
The median center of population is calculated from the intersection of two median lines. The first median line is the geographic line running north and south that divides the population into two equal halves, east and west. The second median line is the geographic line running east and west that divides the population into two equal halves, north and south. For the 2000 United States Census, the median center of population was located in Van Buren township, Daviess County, Indiana. For a complete list of the median center of population for each census since 1880, and for a more detailed description of how these values are calculated, see (http://www.census.gov/geo/www/cenpop/calculate2k.pdf). |
| Completed |
2005-05-23 |
|
Floods in the Ohio River Val
| Title |
Floods in the Ohio River Valley |
| Description |
A small break in the clouds on January 9, 2005, provided the Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) flying aboard NASA?s Terra [ http://terra.nasa.gov/ ] satellite a peek at the swollen rivers of the Ohio River Valley in the Central Lowlands of the United States. Winter weather has pushed the Ohio River and many of its tributaries past flood stage. In the above MODIS image, the Ohio River, Wabash River, White River and the East Branch White River are all swollen compared to conditions on December 17, 2004, shown in the lower image. A false-color band combination has been used to make the flood waters more apparent. In both images, water is dark blue and black, clouds are light blue and white, vegetation is bright green, and bare earth is pink. NASA images courtesy the MODIS Rapid Response Team [ http://rapidfire.sci.gsfc.nasa.gov ] at NASA GSFC. |
|
Floods in the Ohio River Val
| Title |
Floods in the Ohio River Valley |
| Description |
A small break in the clouds on January 9, 2005, provided the Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) flying aboard NASA?s Terra [ http://terra.nasa.gov/ ] satellite a peek at the swollen rivers of the Ohio River Valley in the Central Lowlands of the United States. Winter weather has pushed the Ohio River and many of its tributaries past flood stage. In the above MODIS image, the Ohio River, Wabash River, White River and the East Branch White River are all swollen compared to conditions on December 17, 2004, shown in the lower image. A false-color band combination has been used to make the flood waters more apparent. In both images, water is dark blue and black, clouds are light blue and white, vegetation is bright green, and bare earth is pink. NASA images courtesy the MODIS Rapid Response Team [ http://rapidfire.sci.gsfc.nasa.gov ] at NASA GSFC. |
|
Snowstorm in the American Mi
| Title |
Snowstorm in the American Midwest |
| Description |
The vernal equinox marks the start of spring in the Northern Hemisphere. But after a record-setting warm winter, the start of spring 2006 came with an ironic twist: a powerful snowstorm that blanketed most of the American Midwest in heavy snow. According to the Associated Press, snow fell as rapidly as two inches an hour in Illinois and Indiana, while in parts of Nebraska, total accumulations were as much as two feet (roughly 60 centimeters) of snow, closing sections of Interstate 80. In Colorado and Kansas, the same snow system also forced closings along Interstate 70 on March 20. The AP was also reporting that at least five deaths had been attributed to the snow in Colorado, Nebraska, and Texas. The Moderate Resolution Imaging Spectroradiometer (MODIS) on the Aqua satellite observed the wake behind the storm at 12:55 p.m. Mountain Time (19:45 UTC) on March 21, 2006. In this false-color image, clouds appear white, snow and ice appear blue, and land colors vary from reddish tans to greens in areas of lesser or greater vegetation. While a thin layer of cloud covers much of the area where the heaviest snow fell the previous day, the long, wide swath of blue, occasionally visible through the thin cloud cover, shows the path of the snowstorm. NASA image created by Jesse Allen, Earth Observatory, using data obtained courtesy of the MODIS Rapid Response team. |
|
Globular Cluster M3 from WIY
| Title |
Globular Cluster M3 from WIYN |
| Explanation |
This huge ball of stars predates our Sun. Long before humankind evolved, before dinosaurs roamed [ http://www.dinosaur.org/timeline.htm ], and even before our Earth existed, ancient globs of stars condensed and orbited a young Milky Way Galaxy [ http://antwrp.gsfc.nasa.gov/apod/milky_way.html ]. Of the 200 [ http://www.faqs.org/faqs/astronomy/faq/part8/section-5.html ] or so globular clusters [ http://antwrp.gsfc.nasa.gov/apod/globular_clusters.html ] that survive today, M3 [ http://www.seds.org/messier/m/m003.html ] is one of the largest and brightest, easily visible in the Northern hemisphere with binoculars. M3 [ http://www.astroimages.org/ccd/m3.html ] contains about half a million stars, most of which are old and red. Light takes about 35,000 years to reach us from M3 [ http://en.wikipedia.org/wiki/Globular_Cluster_M3 ], which spans about 150 light years [ http://chandra.harvard.edu/photo/cosmic_distance.html ]. The above picture [ http://www.noao.edu/image_gallery/html/im0838.html ] is a composite of blue and red images. |
|
International Space Station
| Title |
International Space Station in Transit |
| Explanation |
A stunning telescopic image of the International Space Station [ http://liftoff.msfc.nasa.gov/temp/StationLoc.html ] crossing in front of an eight day old Moon, this picture was captured on April 11th. But while Wednesday's leisurely transit of Mercury [ http://www.xs4all.nl/~carlkop/mercurius/transit.html ] across the Sun entertained observers all over the dayside [ http://antwrp.gsfc.nasa.gov/apod/ap030424.html ] of planet Earth, the audience for this lunar transit was more restricted. Like other satellites [ http://heavens-above.com/ ] in low Earth orbit, the space station moves quickly [ http://antwrp.gsfc.nasa.gov/apod/ap001214.html ] through the sky. Glinting in the sunlight [ http://antwrp.gsfc.nasa.gov/apod/ap020426.html ] near sunset and sunrise, its path strongly depends on the observer's longitude and latitude. So, well-placed astronomer Tom Laskowski tracked the orbiting space station from a site near South Bend, Indiana, USA and recorded a digital movie [ http://members.aol.com/mrtsp91/iss.htm ] of the fleeting, dramatic event. This single frame from the movie has been enhanced to bring out detail in the space station [ http://spaceflight.nasa.gov/gallery/vrml/station/ ]. Seen below the lunar terminator at the lower left, the International Space Station appears here at a distance of just over 400 kilometers, with the Moon [ http://antwrp.gsfc.nasa.gov/apod/ap010218.html ] nearly 400,000 kilometers away. |
|
The Satellites that Surround
| Title |
The Satellites that Surround Earth |
| Explanation |
Thousands of satellites [ http://satobs.org/ ] orbit the Earth. Costing billions of dollars, this swarm of high altitude robots is now vital to communication [ http://www.smgaels.org/physics/97/MGRAHLFS.HTM ], orientation [ http://www.aero.org/publications/GPSPRIMER/WhatisGPS.html ], and imaging both Earth [ http://physics.uwstout.edu/wx/wxsat/wxsat.htm ] and space [ http://antwrp.gsfc.nasa.gov/apod/ap010806.html ]. One common type of orbit [ http://liftoff.msfc.nasa.gov/RealTime/JTrack/Spacecraft.html ] is geostationary where a satellite will appear to hover above one point on Earth's equator. Geostationary orbits [ http://lakdiva.org/clarke/1945ww/ ] are very high up -- over five times the radius of the Earth [ http://www.nineplanets.org/earth.html ] -- and possible only because the satellite orbital period [ http://spaceplace.jpl.nasa.gov/goes/goes_poes_orbits.htm ] is exactly one day. It is usually cheaper to place a satellite [ http://science.howstuffworks.com/satellite1.htm ] in low Earth orbit, around 500 kilometers, just high enough to avoid the effect of Earth's atmosphere [ http://scipp.ucsc.edu/outreach/balloon/atmos/The%20Earth.htm ]. The above animated sequence [ http://www.cs.indiana.edu/~soljourn/pub/earthsat.txt ] starts by showing the halo of Earth's satellites [ http://asd-www.larc.nasa.gov/SCOOL/orbits.html ], including the ring at geostationary, and finishes by zooming in on the only one currently hosting humans: the International Space Station [ http://antwrp.gsfc.nasa.gov/apod/ap021208.html ]. |
|
Globular Cluster M3
| Title |
Globular Cluster M3 |
| Explanation |
This huge ball of stars predates our Sun. Long before humankind evolved, before dinosaurs roamed [ http://www.dinosaur.org/timeline.htm ], and even before our Earth existed, ancient globs of stars condensed and orbited a young Milky Way Galaxy [ http://antwrp.gsfc.nasa.gov/apod/milky_way.html ]. Of the 200 [ http://www.faqs.org/faqs/astronomy/faq/part8/section-5.html ] or so globular clusters [ http://antwrp.gsfc.nasa.gov/apod/globular_clusters.html ] that survive today, M3 [ http://www.seds.org/messier/m/m003.html ] is one of the largest and brightest, easily visible in the Northern hemisphere with binoculars. M3 [ http://www.astroimages.org/ccd/m3.html ] contains about half a million stars, most of which are old and red. Light takes about 100,000 years to reach us from M3, which spans about 150 light years [ http://chandra.harvard.edu/photo/cosmic_distance.html ]. The above picture [ http://www.noao.edu/image_gallery/html/im0838.html ] is a composite of blue and red images. |
|
Floods in the U.S. Midwest:
nasa, nasanaturalhazards
* eoimages.gsfc.nasa.gov/ima
Mississippi_TMO_2008171
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2008-06-19 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
Mississippi_TMO_2008171 |
|
Earth observations taken fro
johnsonspacecentermediaarchi
Earth observations taken fro
STS073-707-013
| mediatype |
IMAGE |
| mediatype |
image |
| date |
1995-10-23 |
| creator |
NASA |
| identifier |
STS073-707-013 |
|
Floods in the U.S. Midwest:
nasa, nasanaturalhazards
* eoimages.gsfc.nasa.gov/ima
Indiana_AMO_2008012
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2008-01-12 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
Indiana_AMO_2008012 |
|
Snowstorm in the American Mi
nasa, nasanaturalhazards
The vernal equinox marks the
midwest_AMO_2006080
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2006-03-21 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
midwest_AMO_2006080 |
|
Spring in Southeastern Illin
nasa, nasaimageofthedaygalle
Vegetation across southeast
PIA04356
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2004-04-05 |
| creator |
NASA -- Image courtesy NASA/GSFC/LaRC/JPL, www-misr.jpl.nasa.gov/ MISR Team. Text by Clare Averill (Raytheon/JPL). |
| identifier |
PIA04356 |
|
Earth observations taken fro
johnsonspacecentermediaarchi
Earth observations taken fro
STS073-707-028
| mediatype |
IMAGE |
| mediatype |
image |
| date |
1995-10-23 |
| creator |
NASA |
| identifier |
STS073-707-028 |
|
Spring in Southeastern Illin
PIA04356
Sol (our sun)
Multi-angle Imaging SpectroR
| Title |
Spring in Southeastern Illinois and Central Indiana |
| Original Caption Released with Image |
Pasadena, CA, for NASA's Office of Earth Science, Washington, DC. The Terra satellite is managed by NASA's Goddard Space Flight Center, Greenbelt, MD. JPL is a division of the California Institute of Technology., Vegetation across southeast Illinois and central Indiana is shown in this set of multispectral and multiangle images from the Multi-angle Imaging SpectroRadiometer (MISR). Across the center of the image area, the Wabash River runs southward, and in some places corresponds with the Illinois-Indiana border. The White River flows through the city of Indianapolis (to the right of image center), and into Monroe Lake (a dark-colored reservoir at bottom-right). The majority of these fertile lands are used to grow crops, with woodlands present along the rivers and in the rolling hills of South Indiana, indicated in the lower right-hand portion of the images. The top-left panel is a natural color image from MISR's nadir camera, and the top-right panel is false-color image, also from MISR's nadir camera, but displaying data from MISR's near-infrared, red and green bands as red, green and blue, respectively. Living vegetation is highly reflective at near-infrared wavelengths and so appears in red hues in the false-color image. The lower-left panel is a multi-angular composite in which data from the red band of MISR's 46 backward, nadir, and 46 forward viewing cameras are displayed as red, green and blue, respectively. The lower-right panel displays near-infrared band data in the same configuration from the same cameras. Color variations in the angular composites serve as a proxy for changes in angular reflectance, which are in turn influenced by the vegetation structure, terrain, soil type, and the solar illumination conditions. When MISR captured this image on April 5, 2004, areas with strongest near-infrared reflectance corresponded with wooded areas, or with the perimeters of cities, while the croplands on the Illinois side of the Wabash River had yet to undergo vigorous springtime growth. On the Indiana side of the Wabash River, a large tract of forested land is situated about 70 kilometers south of Indianapolis, and appears in dark green hues in both the red and the near-infrared angular composites, indicating that it is more reflective in the nadir view than at the off-nadir angles. This can occur if the underlying soil is brighter than the vegetation at both wavelengths. However, many forested areas that appear in dark green hues in the red-band angular composite exhibit more neutral tones in the near-infrared angular composite. This suggests greater near-infrared reflectivity in the nadir view in those areas, possibly due to enhanced abundance of understory vegetation. The Multiangle Imaging SpectroRadiometer observes the daylit Earth continuously and every 9 days views the entire globe between 82 north and 82 south latitude. These data products were generated from a portion of the imagery acquired during Terra orbit 22868. The panels cover an area of about 235 kilometers x 170 kilometers, and utilize data from blocks 58 to 59 within World Reference System-2 path 22. MISR was built and is managed by NASA's Jet Propulsion Laboratory, |
|
Louisville, KY, USA
| Title |
Louisville, KY, USA |
| Description |
The meandering Ohio River bisecting this image is the border between Kentucky and Indiana. Louisville, KY (38.5N, 86.0W) on the south shore, is the main city seen in this predominately agricultural region where much of the native hardwood forests have been preserved in the hilly terrain. The main crops in this region include corn, alfalfa, wheat and soybeans. The dark rectangle in south Indiana near the river is The U.S. Army's Jefferson Proving Ground. |
| Date Taken |
1973-06-22 |
|
Metropolitan area of Chicago
| Title |
Metropolitan area of Chicago |
| Description |
The metropolitan area of Chicago is encompassed in this Skylab 3 Earth Resources Experiments Package (EREP) S190-B photograph taken on September 18, 1973 from the Skylab space station cluster in Earth orbit. The surrounding major cities of Aurora and Joliet, Illinois, Hammond, Gary and East Chicago, Indiana, are easily delineated. |
| Date Taken |
1973-09-18 |
|
Midwestern United States as
| Title |
Midwestern United States as seen from STS-58 |
| Description |
A cloud-free, wide-angle view from above western Tennessee to the northern edge of Lake Michigan. The view extends from Saint Louis, Missouri near the lower left-hand corner, past Evansville, Indiana and Louisville, Kentucky to Cincinnati, Ohio. A range of hills covered by trees in Fall foliage extends from the Ohio River toward Lake Michigan, ending just southwest of Indianapolis, Indiana. |
| Date Taken |
1993-10-30 |
|
Indiana/Kentucky/Ohio city l
| Title |
Indiana/Kentucky/Ohio city lights seen be STS-62 |
| Description |
Much of Ohio and parts of Indiana and Kentucky were captured in this nocturnal 35mm frame photographed from the Space Shuttle Columbia. The bright spots in the photo are major cities in the three states, with Springfield, Dayton and Cincinnati in the center. Lake Erie and Cleveland and Akron are in the upper left quadrant. The border-forming Ohio River helps delineate Louisville and New Albany in the lower right corner with Lexington visible just below center at right edge. Indianapolis is in the lower left corner. |
| Date Taken |
1994-03-05 |
|
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