The deep ocean floor is among the last frontiers to be fully mapped. Only about 20% of the seafloor has been accurately mapped, leaving much of it still unexplored and unknown.
More then 390 miles of passageways have been mapped.
Mercury is a pretty interesting place, but not really for travel or tourism. We have mapped and named portions of it but not for the purpose of visiting.
As a verb. The terrain has been mapped for the upcoming incursion.
By the best figures, only 2-3 percent of the ocean floor has been properly mapped, at least in regards to the public domain. Certain militaries may be able to claim as high as 10 percent, but those figures are guarded nearly as closely as the other information contained in their files.
We do not know, since no man has ever been to Mercury.
most of it
The first of two spacecraft to visit the planet was Mariner 10, which has mapped about 45% of the planet's surface from 1974 to 1975. The second is the MESSENGER spacecraft from NASA, which mapped another 30% during his trip to Mercury January 14, 2008. MESSENGER is now in orbit around Mercury to complete the mapping.
over 1,000 miles
over 1,000 miles
over 1,000 miles
over 1,000 miles