
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
This Hubble image shows the spiral galaxy UGC 11397, which resides in the constellation Lyra (The Lyre). via NASA https://ift.tt/oNArYFz
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