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We summarize a laser-ranged satellite test of frame-dragging, a prediction of General Relativity, and then concentrate on the estimate of thermal thrust, an important perturbation affecting the accuracy of the test. The frame dragging study…

Frame dragging, one of the outstanding phenomena predicted by General Relativity, is efficiently studied by means of the laser-ranged satellites LARES, LAGEOS and LAGEOS 2. The accurate analysis of the orbital perturbations of Earth's solid…

Earth and Planetary Astrophysics · Physics 2018-02-02 V. G. Gurzadyan , I. Ciufolini , H. G. Khachatryan , S. Mirzoyan , A. Paolozzi , G. Sindoni

We report the improved test of frame-dragging, an intriguing phenomenon predicted by Einstein's General Relativity, obtained using 7 years of Satellite Laser Ranging (SLR) data of the satellite LARES (ASI, 2012) and 26 years of SLR data of…

Laser-ranging satellites have proved their efficiency in high precision testing of General Relativity and constraining modified gravity theories proposed to explain the dark sector and the cosmological tensions. The LARES 2 satellite…

General Relativity and Quantum Cosmology · Physics 2025-10-01 V. G. Gurzadyan , I. Ciufolini , H. G. Khachatryan , S. Mirzoyan , A. Paolozzi

The laser-tracked geodetic satellites LAGEOS, LAGEOS II and LARES are currently employed, among other things, to measure the general relativistic Lense-Thirring effect in the gravitomagnetic field of the spinning Earth with the hope of…

General Relativity and Quantum Cosmology · Physics 2015-12-15 Lorenzo Iorio

After an introduction on phenomena due to spin and mass-energy currents on clocks and photons, we review the 1995-2001 measurements of the gravitomagnetic field of Earth and Lense-Thirring effect obtained by analyzing the orbits of the two…

General Relativity and Quantum Cosmology · Physics 2007-05-23 Ignazio Ciufolini

In this work some aspects of the detection of certain general relativistic effects in the weak gravitational field of the Earth via laser-ranged data to some existing or proposed geodetic satellites are examined. The focus is on the…

General Relativity and Quantum Cosmology · Physics 2007-05-23 Lorenzo Iorio

The LARES (LAser RElativity Satellite) satellite was successfully launched in February 2012. The LARES space experiment is based on the orbital determinations of the laser ranged satellites LARES, LAGEOS (LAser GEOdynamics Satellite) and…

General Relativity and Quantum Cosmology · Physics 2015-06-17 I. Ciufolini , B. Moreno Monge , A. Paolozzi , R. Koenig , G. Sindoni , G. Michalak , E. Pavlis

In this paper we will show in detail that the performed attempts aimed at the detection of the general relativistic Lense-Thirring effect in the gravitational field of the Earth with the existing LAGEOS satellites are often presented in an…

General Relativity and Quantum Cosmology · Physics 2007-05-23 Lorenzo Iorio

We apply the Kolmogorov statistic to analyse the residual data of two LAGEOS satellites on General Relativistic Lense-Thirring effect, and show that it reveals a tiny difference in the properties of the satellites, possibly related to…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-16 V. G. Gurzadyan , I. Ciufolini , S. Sargsyan , G. Yegorian , S. Mirzoyan , A. Paolozzi

In this paper, we provide a detailed description of our recent analysis and determination of the frame-dragging effect obtained using the nodes of the satellites LAGEOS and LAGEOS 2, in reply to the paper "On the reliability of the so-far…

General Relativity and Quantum Cosmology · Physics 2007-05-23 Ignazio Ciufolini , Erricos Pavlis

Non-gravitational Yarkovsky-Rubincam effect for LAGEOS and LAGEOS 2 satellites used to probe General Relativity has been revealed by means of the Kolmogorov analysis of their perturbations. We present the method and its efficiency at…

General Relativity and Quantum Cosmology · Physics 2015-06-18 S. Sargsyan , G. Yegorian , S. Mirzoyan

The current LAGEOS-LARES 2 experiment aims to accurately measure the general relativistic Lense-Thirring effect in the gravitomagnetic field of the spinning Earth generated by the latter's angular momentum $\boldsymbol{J}$. The key quantity…

General Relativity and Quantum Cosmology · Physics 2025-03-11 Lorenzo Iorio

The new geodetic satellite LARES 2, cousin of LAGEOS and sharing with it almost the same orbital parameters apart from the inclination, displaced by 180 deg, was launched last year. Its proponents suggest using the sum of the nodes of…

General Relativity and Quantum Cosmology · Physics 2023-05-01 Lorenzo Iorio

We present a test of General Relativity, the measurement of the Earth's dragging of inertial frames. Our result is obtained using about 3.5 years of laser-ranged observations of the LARES, LAGEOS and LAGEOS 2 laser-ranged satellites…

In 2016, we published "A test of general relativity using the LARES and LAGEOS satellites and a GRACE Earth gravity model. Measurement of Earth's dragging of inertial frames [1]", a measurement of frame-dragging, a fundamental prediction of…

General Relativity and Quantum Cosmology · Physics 2019-10-30 Ciufolini , Ignazio , Erricos C. Pavlis , John Ries , Richard Matzner , Rolf Koenig , Antonio Paolozzi , Giampiero Sindoni , Vahe Gurzadyan , Roger Penrose , Claudio Paris

Testing the effects predicted by the General Theory of Relativity, in its linearized weak field and slow motion approximation, in the Solar System is difficult because they are very small. Among them the post-Newtonian gravitomagnetic…

General Relativity and Quantum Cosmology · Physics 2007-11-12 Lorenzo Iorio

In three previous papers we presented the LARES 2 space experiment aimed at a very accurate test of frame-dragging and at other tests of fundamental physics and measurements of space geodesy and geodynamics. We presented the error sources…

Recently, Ciufolini et al. reported on a test of the general relativistic gravitomagnetic Lense-Thirring effect by analyzing about 3.5 years of laser ranging data to the LAGEOS, LAGEOS II, LARES geodetic satellites orbiting the Earth. By…

General Relativity and Quantum Cosmology · Physics 2017-02-07 Lorenzo Iorio

Current observations of the universe have strengthened the interest to further test General Relativity and other theories of fundamental physics. After an introduction to the phenomenon of frame-dragging predicted by Einstein's theory of…

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