Image from TERRA
Mon, 08 Mar 2021 12:00 EST

Farmers, researchers, meteorologists and others now have access to high-resolution NASA data on soil moisture, thanks to a new tool developed by the U.S. Department of Agriculture (USDA)’s National Agricultural Statistics Service (NASS) in collaboration with NASA and George Mason University.

Image from TERRA
Thu, 04 Feb 2021 10:00 EST

NASA satellite data helps people maintain thousands of freshwater pumps by highlighting places in Africa most at-risk for drought.

Image from TERRA
Thu, 05 Nov 2020 13:05 EST

Annapolis, Maryland; Norfolk, Virginia; and Miami were originally built and mapped to provide enough protection against flooding, but sea level rise has caused that buffer to shrink.

Mapping Minerals with Light

NASA image by Robert Simmon with ASTER data. Caption by Holli Riebeek with information and review provided by David Mayer, Robert Simmon, and Michael Abrams.

A satellite image is more than a photo. It is a picture of the amount and type of energy reflected or emitted by the Earth and recorded by a satellite instrument. There are many ways to combine those measurements to create an image, and each combination provides different insights.

The spectacular exposed geology of northwestern China offers an ideal landscape for illustrating how satellite measurements can identify minerals from afar. In satellite imagery, this area has three different sedimentary rock layers that are visible as rainbow stripes on a series of ridges. The Piqiang Fault has split the ridgeline, so the colored layers are offset by about three kilometers (two miles). All of the images on this page were made from data acquired on February 24, 2005, by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) on NASA’s Terra satellite. Read more

NASA image by Robert Simmon with ASTER data. Caption by Holli Riebeek with information and review provided by David Mayer, Robert Simmon, and Michael Abrams.
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