"From Aristotle to Einstein and beyond, Gravity's Arc is a lucid and beautifully written exposition of the still mysterious force that holds our universe together -- and the even more mysterious dark twin that may blow it apart."
—Joshua Gilder, author of Heavenly Intrigue: Johannes Kepler, Tycho Brahe, and the Murder Behind One of History's Greatest Scientific Discoveries

"A lucid book on gravity, beautifully written. As up to date as the effect of gravity on the bones of astronauts."
—Denis Brian, author of The Unexpected Einstein: The Real Man Behind the Icon and The Curies: A Biography of the Most Controversial Family in Science