In June, 2003 Italian astrophysicists used radio signals from the Cassini satellite to test general relativity when the sun was between Earth and Cassini - (pa

In June, 2003 Italian astrophysicists used radio signals from the Cassini satellite to test general relativity when the sun was between Earth and Cassini - (paywall, but nice summary in the non-paywalled abstract) https://www.nature.com/articles/nature01997 https://www.nature.com/articles/nature01997 https://www-n.oca.eu/Mignard/Grex/Presentations_pdf/Grex04_B_Bertotti.pdf https://www-n.oca.eu/Mignard/Grex/Presentations_pdf/Grex04_B... https://physicsworld.com/a/general-relativity-passes-cassini-test/ https://physicsworld.com/a/general-relativity-passes-cassini...