In World War I, their father was wounded at the Battle of Verdun and awarded the Croix de Guerre.
Steinberg played a major part in the construction of the large decimeter radio telescope,[6][7] which was officially inaugurated in May 1965 by Charles de Gaulle[3] but became fully operational only in 1967.
The service launched, in 1965 and 1967, two French Rubis rockets with low-frequency receivers and with deployment of very long dipole antennas for detection in space of radio waves with frequency less than 3 MHz.
The experiment successfully showed for the first time the directivity of solar radio bursts of Types I and III.
A similar experiment for detection at lower frequencies was launched in 1973 on board the Soviet Mars 7 mission.
[8] J.-L. Steinberg, Jean-François Denisse, Jean-Claude Pecker, Jan Oort, Anders Reiz, and Stuart Pottasch played important roles in the founding of the journal.
[12] In November 2017 a workshop was held as a memorial to him, and, on the Paris Observatory's Meudon campus, a building was named after him.