Solar Energy Systems in Cosmic Context

Ever wondered why our Milky Way galaxy, home to the solar system, keeps burning bright for billions of years? The answer lies in the same physics governing modern renewable energy systems. Recent data from the European Space Agency's Gaia mission reveals that stars like our Sun achieve 99% mass-to-energy conversion efficiency through nuclear fusion – a number that makes Earth-bound solar panels (currently at 22-24% efficiency) look positively primitive.