Physics
Relativity & Cosmology
Cosmology studies the origin, structure and fate of the universe, built on Einstein's theory of relativity. Katie Mack's The End of Everything (Astrophysically Speaking) explains how cosmologists use relativity and observation to imagine the universe's possible endings: a Big Crunch as gravity wins, a Heat Death as everything spreads out and cools, a Big Rip, Vacuum Decay or a cosmic Bounce. Clear, witty and up to date. More books on relativity and cosmology will join this category; see Physics.