The sites include, The Great Pyramid, The Taj Mahal, Sagrada Famlia, The Dolomites, The Royal Botanic Gardens, Kew, The Great Sphinx, etc. 27.Developer(s) Google Initial release June 11, 2001; 19 years ago ( 2001-06-11 ) Stable release.
The program maps the Earth by superimposing satellite images, aerial photography, and GIS data onto a 3D globe, allowing users to see cities and landscapes from various angles. Users can explore the globe by entering addresses and coordinates, or by using a keyboard or mouse. Users may use the program to add their own data using Keyhole Markup Language and upload them through various sources, such as forums or blogs. Google Earth is able to show various kinds of images overlaid on the surface of the earth and is also a Web Map Service client. Recently Google has revealed that Google Earth now covers more than 98 percent of the world, and has captured 10 million miles of Street View imagery, a distance that could circle the globe more than 400 times. Additional globes for the Moon and Mars are available, as well as a tool for viewing the night sky. Other features allow users to view photos from various places uploaded to Panoramio, information provided by Wikipedia on some locations, and Street View imagery. The web-based version of Google Earth also includes Voyager, a feature that periodically adds in-program tours, often presented by scientists and documentarians. Some countries have requested that certain areas be obscured in Googles satellite images, usually areas containing military facilities. At the time, the company was developing 3D gaming software libraries. As a demo of their 3D software, they created a spinning globe that could be zoomed into, similar to the Powers of Ten film. The demo was popular, but the board of Intrinsic wanted to remain focused on gaming, so in 1999, they created Keyhole, Inc., headed by John Hanke. Keyhole then developed a way to stream large databases of mapping data over the internet to client software, a key part of the technology, 8 and acquired patchworks of mapping data from governments and other sources. The product, called Keyhole EarthViewer, was sold on CDs for use in fields such as real estate, urban planning, defense, and intelligence; users paid a yearly fee for the service. Despite making a number of capital deals with Nvidia and Sony, 8 the small company was struggling to make payroll, and employees were leaving. After zooming in far enough, the imagery transitions into different imagery of the same area with finer detail, which varies in date and time from one area to the next. The imagery is retrieved from satellites or aircraft. Before the launch of NASA and the USGSs Landsat 8 satellite, Google relied partially on imagery from Landsat 7, which suffered from a hardware malfunction that left diagonal gaps in images. In 2013, Google used datamining to remedy the issue, providing what was described as a successor to the Blue Marble image of Earth, with a single large image of the entire planet. This was achieved by combining multiple sets of imagery taken from Landsat 7 to eliminate clouds and diagonal gaps, creating a single mosaic image. Google now uses Landsat 8 to provide imagery in a higher quality and with greater frequency. Imagery is hosted on Googles servers, which are contacted by the application when opened, requiring an Internet connection. For much of the Earth, Google Earth uses digital elevation model data collected by NASA s Shuttle Radar Topography Mission. This creates the impression of three-dimensional terrain, even where the imagery is only two-dimensional. Google grants licenses in this data allowing, among other things, non-commercial personal use of the images (e.g., on a personal website or blog) as long as copyrights and attributions are preserved. By contrast, images created with NASAs globe software WorldWind use The Blue Marble, Landsat, or USGS imagery, each of which is in the public domain. Clicking the clock icon in the toolbar opens a time slider, which marks the time of available imagery from the past. This feature allows for observation of an areas changes over time. Utilizing the timelapse feature allows for the ability to view a zoomable video as far back as 32 years. In June 2012, Google announced that it would be replacing user-generated 3D buildings with an auto-generated 3D mesh. This would be phased in, starting with select larger cities, with the notable exception of cities such as London and Toronto which required more time to process detailed imagery of their vast number of buildings. The reason given is to have greater uniformity in 3D buildings and to compete with Nokia Here and Apple Maps, which were already using this technology. The coverage began that year in 21 cities in four countries. By early 2016, 3D imagery had been expanded to hundreds of cities in over 40 countries, including every U.S. Antarctica. The photos were taken by cameras mounted on automobiles, can be viewed at different scales and from many angles, and are navigable by arrow icons imposed on them. The sites include, The Great Pyramid, The Taj Mahal, Sagrada Famlia, The Dolomites, The Royal Botanic Gardens, Kew, The Great Sphinx, etc.
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