Àdàkọ:POTD/2007-07-24
| Àwòrán Ọjọ́ Òní | |
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The world's largest compass rose, drawn on the desert floor at Edwards Air Force Base in California, United States. Painted on the playa near Dryden Flight Research Center, it is inclined to magnetic north and is used by pilots for calibrating heading indicators. Photo credit: NASA |