During a span of 40 years, since 1972, the Landsat series of Earth observation satellites has become a vital reference worldwide for understanding scientific issues related to land use and natural resources.
Beyond the scientific information they supply, some Landsat images are simply striking to look at, presenting spectacular views of mountains, valleys and islands, as well as forests, grasslands and agricultural patterns. By selecting certain features and colouring them from a digital palate, the US Geological Survey has created a series of ‘Earth as Art’ perspectives that demonstrate an artistic resonance in satellite land imagery and provide a special avenue of insight about the geography of each scene.
Nasa asked the public to vote on their favourite images from the more than 120 images in the online “Earth as Art” collection – and received over 14 000 votes.
This image of the meandering Mississippi River taken by Landsat 7 came 3rd. The image was acquired on 28 May 2003.
Small, blocky shapes of towns, fields and pastures surround the graceful swirls and whorls of the Mississippi River, the largest river system in North America. Countless oxbow lakes and cutoffs accompany the meandering river south of Memphis, Tennessee, on the border between Arkansas and Mississippi.
Image credit: Nasa’s Goddard Space Flight Centre/USGS)