Majorana performed a long series of very sensitive gravity shielding experiments from 1918 to 1922, which have never been reproduced.

Other researchers have concluded from other data that if gravitational absorption does exist, it must be at least five orders of magnitude smaller than Majorana's experiments suggest.

[4] [5] Majorana also confirmed Isaac Newton’s law of universal gravitation to high precision.

[6][7][8] His later work at the University of Bologna was influenced by correspondence with his nephew Ettore Majorana (1906–1938), another physicist.

[9][10] In 1927, he was the organizer of the Como Conference, celebrating the centennial anniversary of Alessandro Volta.