Explore the world of astronomy with key"es & bold graphics to illustrate over 100 of the universe's biggest ideas The Astronomy Book is an exciting voyage of discovery through the cosmos Venture from ancient speculations about the nature of the universe to the mind-boggling theories of recent science including those of Albert Einstein & Stephen Hawking Learn about the incredible histories of Halley's comet Hubble's telescope & NASA's modern-day trailblazing as well as the discoveries of famous figures including Ptolemy Isaac Newton Walter Adams Carl Sagan & Alan Stern The Astronomy Book part of DK's bestselling Big Ideas series is is the perfect introduction to our ideas about space time & the physics of the cosmos