Cosmology

Gravitational-wave astronomy

Einstein

Astrophysics

LIGO

Classical mechanics

Physics

Einstein Telescope

Astronomy

Telescope

Gravitational wave

Gravitational-wave observatory

Universe

Journal of Cosmology and Astroparticle Physics

The Einstein Telescope (ET), a proposed European ground-based gravitational-wave detector of third-generation, is an evolution of second-generation detectors such as Advanced LIGO, Advanced Virgo, and KAGRA which could be operating in the mid 2030s. ET will explore the universe with gravitational waves up to cosmological distances. We discuss its main scientific objectives and its potential for discoveries in astrophysics, cosmology and fundamental physics.

Science case for the Einstein telescope