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Updated: Jul 21, 2025

Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface
Published on: July 30, 2020
Equivalence of Active and Passive Gravitational Mass Tested with Lunar Laser Ranging
Vishwa Vijay Singh1, Jürgen Müller1, Liliane Biskupek1
1Institute of Geodesy (IfE), Leibniz University Hannover, Schneiderberg 50, 30167 Hannover, Germany.
Abstract:
Lunar Laser Ranging (LLR) measures the distance between observatories on Earth and retro-reflectors on the Moon since 1969. In this Letter, we study the possible violation of the equivalence of passive and active gravitational mass (m_{a}/m_{p}), for aluminum (Al) and iron (Fe), using LLR data. Our new limit of 3.9×10^{-14} is about 100 times better than that of Bartlett and Van Buren [Equivalence of Active and Passive Gravitational Mass Using the Moon, Phys. Rev. Lett. 57, 21 (1986)PRLTAO0031-900710.1103/PhysRevLett.57.21] reflecting the benefit of the many years of LLR data.
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