Overview

At the center of our Milky Way lies one of the most extraordinary and enigmatic objects in the Universe - Sagittarius A*, a supermassive black hole four million times more massive than the Sun. Invisible to the human eye yet governing the motion of stars and gas across tens of thousands of light-years, it is both a gravitational anchor and a cosmic mystery. In A Hungry Giant in the Heart of Our Galaxy, science writer and philosopher Boris Kriger takes readers on a journey through three decades of discovery at the frontiers of astrophysics. Drawing on first-hand experiences from international conferences, and years of research, the author explores how our understanding of black holes has evolved from speculation to direct observation. Combining lucid scientific exposition with philosophical reflection, the book traces the story of Sagittarius A* from the first hints of its existence in radio astronomy to its recent imaging by the Event Horizon Telescope. It examines the nature of spacetime curvature, accretion disks, and relativistic jets; the relationships between black holes, dark matter, and dark energy; and the role of supermassive black holes in shaping galaxies and cosmic evolution. More than a chronicle of scientific progress, this is a meditation on the human quest to comprehend the incomprehensible. A Hungry Giant in the Heart of Our Galaxy bridges the worlds of physics and philosophy, inviting readers to contemplate not only what lies at the center of our galaxy, but also what drives us - as a species - to look into the darkness and seek understanding.

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