2006-12-18 16:34:59 · 4 answers · asked by elphyman 1 in Science & Mathematics ➔ Astronomy & Space
well there are 27 satellites surrounding our earth and everytime for a particular part on earth there are 3 satellite in certain angles are placed which takes the picture of that part of earth and then all those three pictures are combined to get 3-D picture of planet earth
2006-12-18 16:56:40 · answer #1 · answered by girish sahare 2 · 1⤊ 0⤋
In 2000 the Space Shuttle orbited the Earth and topographically radar-mapped most of the planet. That's probably where they got the three dimensionalness. The Digital Elevation model is accurate to something like 30 or 90 meters (horizontal). As for the pictures, they were taken in the last few years by satellites, or airplanes in areas where there is high detail.
2006-12-18 18:21:35 · answer #2 · answered by anonymous 4 · 0⤊ 0⤋
They have 2d satellite photos. 3D models in there are made by people who look at building photos and build them in 3d cad programs.
2006-12-18 22:54:25 · answer #3 · answered by Anonymous · 0⤊ 0⤋
satelites
or maybe flying nanobots capable of image capture that are invisible to naked eye
2006-12-18 16:43:20 · answer #4 · answered by king p 2 · 0⤊ 0⤋