Bringing Einstein's Concepts to Life Through Art
![](https://www.nasa.gov/sites/default/files/thumbnails/image/gpb.jpg)
Launched on April 20, 2004, Gravity Probe B (GP-B) was a collaboration between Stanford University and NASA designed to test two previously untested aspects of Albert Einstein’s general theory of relativity. via NASA https://ift.tt/3d5BRlg
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