6,000 miles in length and 120 miles wide, this panorama stretches from East Russia to Northern South Africa. NASA calls this work of art ‘The Long Swath’, and it comes in at 19.06 gigapixels.
The full 15 min version, if you have the time, is worth it. The continuous shot shows direct and immediate comparisons and changes on the earth's surface.
You can view the full interactive version on Gigapan, watch the tour video, view the entire panorama in 15 minutes, or load it up on Google Earth.