Stellarium - Stellarium is a free open source planetarium for your computer.
Space Engine - Space Engine is a realistic virtual Universe you can explore on your computer.
Mitaka - Mitaka is software for visualizing the known Universe with up-to-date observational data and...
Hacker News Search - a faster hnsearch
WorldWide Telescope - The WorldWide Telescope (WWT) is a Web 2.
OpenSpace - OpenSpace is open source interactive data visualization software designed to visualize the entire known universe and portray our ongoing efforts to investigate the cosmos.