Universe Expansion Mystery explores the accelerating expansion of the universe, a phenomenon that challenges our understanding of cosmology. It examines the observational evidence supporting this acceleration, like data from Type Ia supernovae, cosmic microwave background, and baryon acoustic oscillations, while also analyzing theoretical models such as dark energy and modified gravity, particularly focusing on the Lambda-CDM model. The book highlights the ongoing quest to understand why the universe's expansion is speeding up and the implications for its ultimate fate, a quest driven by data from instruments like the Planck satellite.
The book progresses by first establishing a historical context, then presenting observational data, and finally delving into the theoretical models attempting to explain cosmic acceleration. It critically evaluates these theories, addressing the challenges and opportunities in this area of research.
A unique aspect is its critical examination of assumptions underlying both the observational evidence and the theoretical models, emphasizing the limitations of current data and the uncertainties inherent in extrapolating our understanding of physics to cosmological scales.
