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Originally posted by mythatsabigprobe
There are satellite image viewers like Google Mars and Google Moon. So far they're the only other bodies that we've put satellites around.
Originally posted by Copernicus
Both of them are just a single picture/strip being repeated over and over again.
Originally posted by mythatsabigprobe
Originally posted by Copernicus
Both of them are just a single picture/strip being repeated over and over again.
They're made up of thousands of film strips interlaced, the program just projects it as a repeating strip instead of a globe. All the same detail is there.
Sorry to intervene in your conversation with mythatsabigprobe, but what do you mean by that?
Originally posted by Copernicus
Yes, but I meant its only showing very small parts of the planets, over and over again. It would be like taking a picture of some fields here on Earth and repeating them over and over again.
Originally posted by ArMaP
Do you mean that they show always the same thing, repeated along the planet?
Originally posted by mythatsabigprobe
No, I think you'll find the moon and mars are mapped completely in those programs. There are probably better ones around like the NASA program ArMaP mentioned.
Jupiter, Saturn, Uranus, and Neptune: These planets are gas giants - they are essentially nothing but atmosphere, with no notable "surface" to map.
Originally posted by ArMaP
Being a flat surface, it scrolls the image like it was a cylinder with the image mapped over it, when you reach 360º you are back at 0º. It would work in the same way if it was a globe, but then it would better understood.
Most people are surprised to learn that we have more than one source for our imagery. We collect it via airplane and satellite, but also just about any way you can imagine getting a camera above the Earth's surface: hot air balloons, model airplanes – even kites. The traditional aerial survey involves mounting a special gyroscopic, stabilized camera in the belly of an airplane and flying it at an elevation of between 15,000 feet and 30,000 feet, depending on the resolution of imagery you're interested in. As the plane takes a predefined route over the desired area, it forms a series of parallel lines with about 40 percent overlap between lines and 60 percent overlap in the direction of flight. This overlap of images is what provides us with enough detail to remove distortions caused by the varying shape of the Earth's surface.