Google Earth

Google Earth
Name	Google Earth
Developer	Google
Released	2001 (as EarthViewer 3D)
Latest release	ongoing
Operating system	Microsoft Windows, macOS, Linux, Android, iOS
Genre	Virtual globe, Geographic information system

Google Earth Google Earth is a virtual globe, map and geographic information program that renders a 3D representation of Earth based on satellite imagery, aerial photography and geographic data. Initially developed from desktop software that visualized NASA and USGS datasets, it evolved into a multi-platform tool used by individuals, educators, researchers and organizations such as United Nations agencies and nonprofit groups. Its interface connects spatial datasets from governments, private companies and academic institutions to provide contextual exploration of places like Mount Everest, Grand Canyon and Times Square.

Overview

Google Earth provides a navigable, photorealistic model of Earth and other celestial bodies through tiled imagery, elevation models and vector overlays. Users can view historical imagery tied to events such as the Haiti earthquake (2010), analyze urban growth in cities like Shanghai and inspect infrastructure near sites like Panama Canal. The software supports layers sourced from institutions such as NASA, NOAA and the European Space Agency that augment imagery with datasets about Mount Kilimanjaro, Great Barrier Reef and Antarctica.

History and Development

The product traces roots to Keyhole, Inc., originally founded to visualize GIS data for businesses and governments; Keyhole's EarthViewer 3D was used in contexts involving USGS and CIA-sponsored spatial projects. After Google acquired Keyhole in 2004, the platform integrated services such as Google Maps and expanded its reach through partnerships with organizations like DigitalGlobe (now part of Maxar Technologies). Major milestones include the release of desktop editions that supported 3D buildings in cities such as San Francisco and New York City, integration of terrain models derived from missions like Shuttle Radar Topography Mission, and rollout of web-based and mobile clients aligning with Android and iOS ecosystems.

Features and Functionality

Core functionalities include 3D navigation, placemarks, measuring tools, historical imagery timelines and layer management. Advanced users employ KML (Keyhole Markup Language) to import datasets related to sites such as Chernobyl disaster exclusion zones, Aral Sea shrinkage maps and archaeological surveys in Pompeii. Integration with services such as Google Street View (using imagery of locations like Paris and Tokyo) and incorporation of 3D textured buildings make the platform useful for urban analysis of districts like Manhattan and Shenzhen. Terrain, elevation and bathymetry features support examinations of features like Mariana Trench and Mount Fuji.

Data Sources and Imagery

Imagery and geospatial content derive from multiple suppliers: commercial satellite firms like Maxar Technologies, aerial photography providers, governmental agencies including USGS and NASA, and community-contributed datasets from organizations such as OpenStreetMap. Historical archives include declassified imagery linked to events like Gulf War reconnaissance, while elevation data may incorporate results from missions such as Shuttle Radar Topography Mission. Proprietary datasets and licensing arrangements with entities like Airbus influence resolution and update cadence across regions such as Washington, D.C. and Beijing.

Uses and Applications

Applications span education, journalism, disaster response, urban planning, scientific research and cultural heritage. Educators use the platform to teach geography of regions like Sahara and Amazon Rainforest while journalists incorporate visualizations into reporting on incidents such as Fukushima Daiichi nuclear disaster. Humanitarian organizations map needs after crises like the 2015 Nepal earthquake, and researchers analyze land cover changes in locales such as Madagascar and Amazon Basin. Real estate professionals, tourism agencies and environmental groups rely on the tool for site assessment near landmarks like Niagara Falls and Mount Kilimanjaro.

Controversies and Privacy Issues

The visibility of private properties and sensitive sites has prompted debates involving national security and individual privacy. Incidents included complaints from governments over imagery of military installations such as Diego Garcia and legal attention when imagery revealed activities near locations like White House perimeters. Privacy advocates cited concerns about identification of individuals in high-resolution imagery and integration with services such as Google Street View, which itself faced regulatory scrutiny in jurisdictions including Germany and France. Licensing disputes and data accuracy controversies have involved companies such as DigitalGlobe and local authorities in cities like London.

Platforms and Accessibility

Clients exist across desktop and mobile platforms including Microsoft Windows, macOS and Linux as standalone applications, plus web-based versions compatible with modern browsers and mobile apps for Android and iOS. Accessibility features and APIs facilitate integration with research tools from institutions such as Stanford University and Massachusetts Institute of Technology, and export formats support interoperable standards used by organizations like Esri. Educational licensing and outreach programs have connected the platform with museums, libraries and universities including Smithsonian Institution and University of Oxford.

Category:Geographic information systems