LARES-2 Satellite Confirms Einstein’s Frame-Dragging Prediction with Record Precision

A study appearing in the latest issue of *Nature* reports that the LARES-2 satellite, launched in 2022, has measured Earth’s frame-dragging effect with a relative uncertainty of one part in a thousand—an order-of-magnitude improvement over all prior near-Earth tests. The result confirms one of Albert Einstein’s key predictions of general relativity, namely that a rotating massive body drags the surrounding spacetime.

Armenian Scientist Co-Authors Study Confirming Einstein’s Theory with Record Precision

The frame-dragging phenomenon, first derived by Josef Lense and Hans Thirring in 1918, has been probed for decades. Early satellite experiments such as LAGEOS (1992) and the Gravity Probe B mission (2004) yielded measurements with uncertainties of several percent. Subsequent analyses using laser-ranged satellites refined the test, but systematic errors from Earth’s tides and non-gravitational forces limited precision. The LARES-2 mission was designed to overcome these limitations through an optimized orbit, a very low surface-to-mass ratio, and a highly uniform retro-reflector array.

Armenian Scientist Co-Authors Study Confirming Einstein’s Theory with Record Precision

• Prof. Vahagn Gurzadyan – head of the Center for Cosmology and Astrophysics at the A.I. Alikhanyan National Science Laboratory (Yerevan Physics Institute) and co-author of the study.

Armenian Scientist Co-Authors Study Confirming Einstein’s Theory with Record Precision

• Italian Space Agency (ASI) and European Space Agency (ESA) – principal sponsors of the LARES-2 mission.

Armenian Scientist Co-Authors Study Confirming Einstein’s Theory with Record Precision

• An international consortium of researchers from institutions worldwide contributed to data analysis, including teams operating the earlier LAGEOS and GRACE satellites.

Nature

• Relative uncertainty: 1 × 10?³ (one part in a thousand).

Nature

• Improvement factor: ? 10 ×  better than previous satellite-based measurements.

Armenian Scientist Co-Authors Study Confirming Einstein’s Theory with Record Precision

• Data sources: Laser-ranging observations of LARES-2 combined with archival LAGEOS and GRACE tracking.

Nature

The unprecedented precision tightens constraints on alternative gravity models that predict deviations from general relativity, such as scalar-tensor and Chern-Simons theories. It also enhances geophysical applications: the combined satellite analysis refines Earth’s lunisolar tide models and improves the determination of the planet’s gravitational field, benefiting navigation and climate studies.

Armenian Scientist Co-Authors Study Confirming Einstein’s Theory with Record Precision

The research team emphasized that LARES-2’s design—particularly its low surface-to-mass ratio and uniform retro-reflectors—was crucial for suppressing non-gravitational perturbations, enabling the high-precision result. Representatives of ASI and ESA highlighted the mission as a benchmark for international collaboration in fundamental physics and Earth science.

Armenian Scientist Co-Authors Study Confirming Einstein’s Theory with Record Precision

No dissenting viewpoints or methodological criticisms were reported in the available sources. The scientific community has broadly welcomed the findings as a significant validation of Einstein’s theory.

Armenian Scientist Co-Authors Study Confirming Einstein’s Theory with Record Precision

• “A groundbreaking study published in the latest issue of Nature has confirmed one of Albert Einstein’s key predictions with unprecedented precision, with Armenian astrophysicist Professor Vahagn Gurzadyan among the international team of researchers behind the achievement.” — *Asbarez* article

Armenian Scientist Co-Authors Study Confirming Einstein’s Theory with Record Precision

• “The paper, titled “LARES-2 Satellite Measures Frame-Dragging Effect Around the Earth,” reports the most accurate measurement to date of the frame-dragging phenomenon – a subtle effect predicted by Einstein’s general theory of relativity, in which a rotating massive body such as Earth drags the fabric of spacetime around with it.” — *Asbarez* article

Armenian Scientist Co-Authors Study Confirming Einstein’s Theory with Record Precision

• “According to the researchers, LARES-2’s optimized orbit, extremely low surface-to-mass ratio, and highly uniform retroreflector distribution enabled scientists to measure Earth’s frame-dragging effect with a relative uncertainty of just one part in a thousand – an order-of-magnitude improvement over previous measurements in the Solar System.” — *Asbarez* article

Armenian Scientist Co-Authors Study Confirming Einstein’s Theory with Record Precision

• “Scientific American highlighted the findings in an article titled “The Earth Is Dragging Spacetime Around Its Orbit, Just as Einstein Predicted,” describing the LARES-2 measurements as among the most precise ever made of the frame-dragging effect.” — *Asbarez* article

Armenian Scientist Co-Authors Study Confirming Einstein’s Theory with Record Precision

All cited sources present a consistent picture of the measurement’s precision and significance. No alternative figures or contradictory interpretations were identified, and the articles do not outline planned follow-up experiments or additional data releases.

Armenian Scientist Co-Authors Study Confirming Einstein’s Theory with Record Precision