9780618982448 | Houghton Mifflin, January 10, 2011, cover price $26.00 | About this edition: The epic, behind-the-scenes story of an astounding gap in our scientific knowledge of the cosmos.

9780547577579, titled "The 4 Percent Universe: Dark Matter, Dark Energy, and the Race to Discover the Rest of Reality" | Mariner Books, October 18, 2011, cover price $15.95 | About this edition: “Fascinating .

9781441769480, titled "The 4 Percent Universe: Dark Matter, Dark Energy, and the Race to Discover the Rest of Reality" | Mp3 una edition (Blackstone Audio Inc, January 10, 2011), cover price $29.95 | About this edition: Over the past few decades, a handful of scientists have been racing to explain a disturbing aspect of our universe: only four percent of it consists of the matter that makes up you, me, our books, and every star and planet.

9781441769459 | Unabridged edition (Blackstone Audio Inc, January 10, 2011), cover price $59.95 | About this edition: Over the past few decades, a handful of scientists have been racing to explain a disturbing aspect of our universe: only four percent of it consists of the matter that makes up you, me, our books, and every star and planet.

9781441769473 | Unabridged edition (Blackstone Audio Inc, January 10, 2011), cover price $29.95 | About this edition: Over the past few decades, a handful of scientists have been racing to explain a disturbing aspect of our universe: only four percent of it consists of the matter that makes up you, me, our books, and every star and planet.

9781441769466 | Unabridged edition (Blackstone Audio Inc, January 10, 2011), cover price $90.00 | About this edition: Over the past few decades, a handful of scientists have been racing to explain a disturbing aspect of our universe: only four percent of it consists of the matter that makes up you, me, our books, and every star and planet.

9780670030743, titled "The Invisible Century: Einstein, Freud and the Search for Hidden Universes" | Viking Pr, June 17, 2004, cover price $24.95 | About this edition: Presents a narrative of how both Freud and Einstein succeeded in furthering knowledge in areas where direct observation and experimentation are limited.

9780143035527 | Reprint edition (Penguin USA, June 28, 2005), cover price $15.00 | About this edition: Presents a narrative of how both Freud and Einstein succeeded in furthering knowledge in areas where direct observation and experimentation are limited.

9780756753436 | Diane Pub Co, November 1, 1998, cover price $22.00 | About this edition: In 1609, Galileo fit two lenses inside a cylindrical tube, aimed it at the sky, and forever changed the world.

9780670876280 | Viking Pr, October 1, 1998, cover price $21.95 | About this edition: A concise look at the impact of the advent of the telescope on the way humans view the universe and their place in it focuses on the visionaries, beginning with Galileo, who created and perfected it

9780140280616 | Penguin USA, October 1, 1999, cover price $11.95 | About this edition: A concise look at the impact of the advent of the telescope on the way humans view the universe and their place in it focuses on the visionaries, beginning with Galileo, who created and perfected it

9780613268929 | Turtleback Books, March 1, 2001, cover price $21.55 | About this edition: A concise look at the impact of the advent of the telescope on the way humans view the universe and their place in it focuses on the visionaries, beginning with Galileo, who created and perfected it

9780312132095 | St Martins Pr, June 1, 1995, cover price $22.95 | About this edition: A portrait of the end of an era in baseball, industry, and an American town is the story of the minor league team from Waterloo, Iowa, based on travel with the Diamonds and talks with players, owners, managers, and citizens