Image from TERRA
Tue, 10 Dec 2019 09:57 EST

Meltwater lakes form on the surface of Greenland’s Petermann Glacier.

Image from TERRA
Mon, 09 Dec 2019 16:30 EST

New time-lapse videos of Earth's glaciers and ice sheets as seenfrom space, some spanning nearly 50 years, are providing new insights into howthe planet's frozen regions are changing.

Image from TERRA
Fri, 22 Nov 2019 08:12 EST

According to a new study, emergency responders could cut costs and save time by using near-real-time satellite data along with other decision-making tools after a flooding disaster.

The Afar Triangle: 15 Years of ASTER Imagery

ASTER_first_An_v2Fifteen years ago this month the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) sensor onboard NASA’s Terra satellite began returning images. The first image from ASTER’s thermal infrared (TIR) subsystem was captured on March 3, 2000 of the western edge of the volcanic Afar Triangle in Ethiopia (see image to the right). This image represents not only ASTER’s first thermal image, but also the first high resolution multispectral thermal data collected by a sensor on a satellite. Since this first image 15 years ago, ASTER data has continued to be valuable to geologic and volcanic applications, as well as many other scientific disciplines.

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