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2. Restrictions on geographic data in China - Wikipedia

   en.wikipedia.org/wiki/Restrictions_on_geographic...

   Google uses GCJ-02 data for the street map, but does not shift the satellite imagery layer, which continues to use WGS-84 coordinates, [45] with the benefit that WGS-84 positions can still be overlaid correctly on the satellite image (but not the street map). Google Earth also uses WGS-84 to display the satellite imagery. [46]

3. Sputnik 1 - Wikipedia

   en.wikipedia.org/wiki/Sputnik_1

   Sputnik 1 (/ ˈ s p ʌ t n ɪ k, ˈ s p ʊ t n ɪ k /, Russian: Спутник-1, Satellite 1) was the first artificial Earth satellite. It was launched into an elliptical low Earth orbit by the Soviet Union on 4 October 1957 as part of the Soviet space program. It sent a radio signal back to Earth for three weeks before its three silver-zinc ...

4. Earth observation satellite - Wikipedia

   en.wikipedia.org/wiki/Earth_observation_satellite

   An Earth observation satellite or Earth remote sensing satellite is a satellite used or designed for Earth observation (EO) from orbit, including spy satellites and similar ones intended for non-military uses such as environmental monitoring, meteorology, cartography and others.

5. List of Google products - Wikipedia

   en.wikipedia.org/wiki/List_of_Google_products

   Google Maps – mapping service that indexes streets and displays satellite and street-level imagery, providing directions and local business search. Google My Maps – a social custom map making tool based on Google Maps. Google Earth – virtual 3D globe that uses satellite imagery, aerial photography, GIS from Google's repository.

6. National Geospatial-Intelligence Agency - Wikipedia

   en.wikipedia.org/wiki/National_Geospatial...

   Virtual Earth is a set of online mapping and search services that deliver imagery through an API. Google and GeoEye: In 2008 NGA partnered with Google and GeoEye. Google would be allowed to use GeoEye spy satellite imagery with reduced resolution for Google Earth. [54]

7. Bhuvan - Wikipedia

   en.wikipedia.org/wiki/Bhuvan

   Bhuvan offers detailed imagery of Indian locations compared to other Virtual Globe Software, with spatial resolutions ranging up to 1 metre. [3] At present 177 cities high-resolution datasets are available, [4] while the rest of the country is covered by 2.5m resolution imagery. The images available do not include any military installations in ...