One of the world’s leading astronomers, Robert Kirshner,
takes readers inside a lively research team
on the quest that led them to an extraordinary cosmological discovery:
the expansion of the universe is accelerating
under the influence of a dark energy that makes space itself expand.
In addition to sharing the story of this exciting discovery,
Kirshner brings the science up-to-date in a new epilogue.
He explains how the idea of an accelerating universe—once
a daring interpretation of sketchy data—is the standard assumption in cosmology today.