February 11 marked the two-year anniversary of the launch of NASA’s Landsat 8 satellite, an event that signaled the continuation of an Earth observation project that began in the early 1970s. To celebrate the occasion, the team has released a vast composite image that stretches unbroken from Sweden to British Columbia.
The images were taken using the Operational Land Imager (OLI) on Landsat 8 back on 2014’s summer solstice – June 21, 2014 – a point at which the Sun doesn’t duck below the Arctic horizon for more than 24 hours. Collecting the images at that point in the year allowed the satellite to capture the region’s ice in various stages of melting.
The entire flyover stretches for a spectacular 6,800 km, with a width of 200 km. It begins in Finland and Sweden, crosses Greenland, North America and Canada’s Nunavut and Northwest Territories, concluding off the shore of British Columbia.