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The discovery of gravitational waves by the LIGO–VIRGO–KAGRA (LVK) collaboration has opened a new window into the universe and renewed interest in understanding the dynamics of two gravitating bodies in general relativity. In recent years, there has been remarkable progress in developing new tools to compute gravitational observables. In particular, ideas from quantum field theory—originally developed to describe particle collisions—have found surprising applications in classical gravity.

In this talk, I will introduce a modern framework developed by Kosower, Maybee, and O’Connell (KMOC) that provides a direct link between quantum scattering amplitudes and classical gravitational observables. I will explain the basic ideas behind this approach and highlight its conceptual advantages over traditional methods. I will then discuss how soft theorems in scattering amplitudes encode universal features of gravitational radiation in classical scattering processes.

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