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"description": "This spectacular blue marble image was the most detailed true-color image of the entire Earth to date in 2002. Using a collection of satellite-based observations, scientists and visualizers stitched together months of observations of the land surface, oceans, sea ice, and clouds into a seamless, true-color mosaic of every square kilometer (.386 square mile) of our planet. The full resolution version of the image is 21,600 pixels across.
Much of the information contained in this image came from a single remote-sensing device-NASA’s Moderate Resolution Imaging Spectroradiometer, or MODIS. Flying over 700 km above the Earth onboard the Terra satellite, MODIS provides an integrated tool for observing a variety of terrestrial, oceanic, and atmospheric features of the Earth.
The land and coastal ocean portions of the image are based on cloud-free surface observations collected from June through September 2001. Two different types of ocean data were used: shallow water true color data, and global ocean color (or chlorophyll) data. Topographic shading is based on an elevation dataset compiled by the U.S. Geological Survey’s EROS Data Center. MODIS observations of polar sea ice were combined with observations from NOAA’s Advanced Very High Resolution Radiometer. The cloud image is a composite of two days of MODIS imagery.",
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"description": "See [http://earthobservatory.nasa.gov/Features/BlueMarble/BlueMarble_2002.php](http://earthobservatory.nasa.gov/Features/BlueMarble/BlueMarble_2002.php)",
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"name": "Heather Hanson",
"employer": "Global Science and Technology, Inc."
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"name": "Mark Malanoski",
"employer": "Global Science and Technology, Inc."
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{
"id": 30613,
"url": "https://svs.gsfc.nasa.gov/30613/",
"page_type": "Hyperwall Visual",
"title": "The Blue Marble From Apollo 17",
"description": "This classic photograph of the Earth was taken on December 7, 1972. This is a version of the image prepared for use on the hyperwall. The original caption is reprinted below:View of the Earth as seen by the Apollo 17 crew traveling toward the moon. This translunar coast photograph extends from the Mediterranean Sea area to the Antarctica south polar ice cap. This is the first time the Apollo trajectory made it possible to photograph the south polar ice cap. Note the heavy cloud cover in the Southern Hemisphere. Almost the entire coastline of Africa is clearly visible. The Arabian Peninsula can be seen at the northeastern edge of Africa. The large island off the east coast of Africa is the Republic of Madagascar. The Asian mainland is on the horizon toward the northeast. || ",
"release_date": "2015-07-20T00:00:00-04:00",
"update_date": "2024-10-10T00:23:07.434478-04:00",
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"alt_text": "Blue marble image of Earth",
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