Editing NASA WorldWind (section)

==Overview==
Though widely available since 2003, WorldWind was released with the NASA Open Source Agreement license in 2004. The latest Java-based version (2.1.0), was released in December 2016.<ref>{{cite web|url=https://github.com/NASAWorldWind/WorldWindJava/releases/tag/v2.1.0 |title=v2.1.0 |website=[[GitHub]] | access-date= April 25, 2017}}</ref> As of 2015 a web based version of WorldWind is under development<ref>{{cite web|url=https://github.com/NASAWorldWind/WebWorldWind |title= NASA WorldWind in JavaScript for HTML5 |website= [[GitHub]] | access-date= April 25, 2017}}</ref> and available online.<ref>{{cite web|url=http://explorer.worldwind.earth/|title=World Wind Explorer|first=Bruce|last=Schubert|website=explorer.worldwind.earth}}</ref> An [[Android (operating system)|Android]] version is also available.<ref>{{cite web|url=https://github.com/NASAWorldWind/WorldWindAndroid/releases/tag/v0.1.0 |title=NASAWorldWind/WorldWindAndroid |website=[[GitHub]] | access-date= April 25, 2017}}</ref>

The previous .NET-based version was an application with an extensive suite of plugins. Apart from the Earth there are several worlds: [[Moon]], [[Mars]], [[Venus]],  [[Jupiter]] (with the four [[Galilean moons]] of [[Io (moon)|Io]], [[Ganymede (moon)|Ganymede]], [[Europa (moon)|Europa]] and [[Callisto (moon)|Callisto]]) and [[Sloan Digital Sky Survey|SDSS]] (imagery of stars and galaxies).

Users could interact with the selected planet by rotating it, tilting the view, and zooming in and out. Five million place names, political boundaries, latitude/longitude lines, and other data can be displayed. WorldWind.NET provided the ability to browse maps and [[geospatial]] data on the internet using the [[Open Geospatial Consortium|OGC]]'s [[Web Map Service|WMS]] servers (version 1.4 also uses [[Web Feature Service|WFS]] for downloading place names), import [[ESRI shapefiles]] and [[Keyhole Markup Language|kml/kmz]] files. This is an example of how WorldWind allows anyone to deliver their data.

Other features of WorldWind.NET included support for .X ([[DirectX]] 3D polygon mesh) models and advanced visual effects such as atmospheric [[scattering]] or [[shaded relief|sun shading]].

The resolution inside the US is high enough to clearly discern individual buildings, houses, cars (USGS Digital Ortho layer) and even the shadows of people (metropolitan areas in USGS Urban Ortho layer). The resolution outside the US is at least 15 meters per pixel.

[[Microsoft]] has allowed WorldWind to incorporate [[Virtual Earth]] high resolution data for [[non-commercial]] use.<ref>{{cite web|url=http://www.worldwindcentral.com/wiki/Virtual_Earth|title=Virtual Earth|work=worldwindcentral.com}}</ref>

WorldWind uses [[digital elevation model]] (DEM) data collected by NASA's Shuttle Radar Topography Mission (SRTM), [[National Elevation Dataset]] (NED) and [[Advanced Spaceborne Thermal Emission and Reflection Radiometer]] (ASTER). This means one can view topographic features such as the Grand Canyon or Mount Everest in three dimensions. In addition, WW has [[bathymetry]] data which allows users to see ocean features, such as [[Oceanic trench|trenches]] and [[Mid-ocean ridge|ridges]], in 3D.

Many people using the applications are adding their own data and are making them available through various sources, such as the WorldWind Central or blogs mentioned in the link section below.

All images and movies created with WorldWind using Blue Marble, Landsat, or USGS [[public domain]] data can be freely modified, re-distributed, and used on web sites, even for commercial purposes.<ref>{{cite web|url= https://www.worldwindcentral.com/wiki/World_Wind_FAQ#Are_images_on_World_Wind_copyrighted.3F |work= worldwindcentral.com |title= World Wind FAQ - Are images on World Wind copyrighted? |access-date= 2024-11-01 |quote= The Landsat Global Mosaic (except for i-3 visible layer), Blue Marble, and the USGS raster maps and images are all Public Domain}}</ref>