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For astronauts aboard theInternational Space Station , any glance out the windowpane could prompt wonderment and awe . One spaceflyer was recently treated to a exceptional sight : a giant checker board stretching across part of the planet ’s control surface .
The astronaut did not in reality stag a giant control panel for playing checker or chess , of course . Rather , patches of deforestationin Idaho created the checked pattern , according toNASA . The white square show where coke had fallen on deforest soil , while the substitute obscure areas show dim forest , the authority said .
The white square patches show areas of deforestation, where snow has fallen on the now-barren ground.
Dividing parcels of land in a checker board pattern was first correspond upon in in the 1800s , when the U.S. administration grant alternating 1 - square - mile ( 2.6 square kilometers ) parcels of land to the Northern Pacific Railway according to NASA . [ solid ground from Above : 101 sensational Images from Orbit ]
" These tract were later sold off and in many cases harvest for timber . The checkerboard — which has since evolved to the one - one-quarter - mile [ 0.4 km ] squares shown here — is now look as a method acting of maintaining the sustainability of forested tract while still enable lumber companies to harvest trees , " NASA officials at the agency ’s Earth Observatorywrote in a blog post .
In the image , the chequer design is bordered to the left wing by the Priest River , which winds through the Selkirk Mountains in northern Idaho . Historically , the river was used to transmit forest from the lumber sites , but in 1968 , the U.S. government classified the body of water as a"wild and scenic river"and so it is now protect from development .
Original clause onLive Science .
