NASA Worldwind: an open-source high-res satellite globe for web pages (worldwind.arc.nasa.gov)

Repo: https://github.com/NASAWorldWind/WebWorldWind

The title should not have been altered. Web WorldWind, linked here, is the JS SDK and a subset of the greater WorldWind project.

Also not to be confused with Microsoft and .NET Foundation's WorldWide Telescope. <https://en.m.wikipedia.org/wiki/WorldWide_Telescope>