PARIS, June 29, 2023 (AFP) – Astronomers across the world announced on Thursday that they have found the first evidence of a long-theorised form of gravitational waves that create a “background hum” rumbling throughout the universe. The breakthrough — made by hundreds of scientists using radio telescopes in North America, Europe, China, India and Australia after years of work — was hailed as a major milestone that opens a new window into the universe. First […]