Einstein's Legacy: Black Holes and Beyond

This chapter explores the intricacies of Einstein's theories of relativity, highlighting the contributions of Carl Schwarzschild in understanding gravity and black holes. It delves into the pivotal concepts of black holes and their enigmatic singularities, as well as the elusive nature of white holes and their theoretical implications. The narrative culminates with the discovery of Cygnus X1, providing compelling evidence for black holes and emphasizing the ongoing quest to reconcile various physical theories in our understanding of the universe.