landsat-7

Yukon Delta, Alaska

Yep. This is Alaska. You heard me. It’s also natural color with visible light and all that. The Yukon Delta looks like this. The elevation here is so low that the river can randomly change courses, leaving ponds and fissures in the ground. It picks up a whole lot of sediment and salt from its travels and consequently turns to a pale green color.

Meandering Mississippi

Meandering Mississippi - May 28th, 2003

Description: Small, blocky shapes of towns, fields, and pastures surround the graceful swirls and whorls of the Mississippi River. Countless oxbow lakes and cutoffs accompany the meandering river south of Memphis, Tennessee, on the border between Arkansas and Mississippi, USA. The “mighty Mississippi” is the largest river system in North America.

Credit: USGS/NASA/Landsat 7

To learn more about the Landsat satellite go to: landsat.gsfc.nasa.gov/

NASA Goddard Space Flight Center enables NASA’s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA’s accomplishments by contributing compelling scientific knowledge to advance the Agency’s mission.