Laser-ranged satellite measurement now accurately reflects Earth`s tidal perturbations
(PHYSorg.com Physics)

Tides on Earth have a far-reaching influence, including disturbing satellites` measurements by affecting their motion. This disturbance can be studied using a model for the gravitational potential of the Earth, taking into account the fact that Earth`s shape is not spherical. The LAser RElativity Satellite (LARES), is the best ever relevant test particle to move in the Earth`s gravitational field. In a new study published in EPJ Plus, LARES proves its efficiency for high-precision probing of General Relativity and fundamental physics. By studying the Earth`s tidal perturbations acting on the LARES, Vahe Gurzadyan from the Center for Cosmology and Astrophysics at Yerevan State University, Armenia, and colleagues demonstrate the value of laser-range satellites for high-precision measurements.