The 4% Universe: Dark Matter, Dark Energy, and the Race to Discover the Rest of Reality
Available on compatible , the free NOOK App, and in My Digital Library
NOOK App
Download NOOK app
NOOK Devices
NOOK eReaders
- NOOK GlowLight 4 Plus
- NOOK GlowLight 4e
- NOOK GlowLight 4
- NOOK GlowLight Plus 7.8"
- NOOK GlowLight 3
- NOOK GlowLight Plus 6"
NOOK Tablets
- NOOK 9" Lenovo Tablet
- NOOK 10" HD Lenovo Tablet
- NOOK Tablet 7" & 10.1"
- NOOK by Samsung Galaxy Tab 7.0 [Tab A and Tab 4]
- NOOK by Samsung [Tab 4 10.1, S2 & E]
Free NOOK Reading Apps
- NOOK for iOS
- NOOK for Android
BN.com website
Go to your Digital Library in My Account
The epic, behind-the-scenes story of an astounding gap in our scientific knowledge of the cosmos.
In the past few years, a handful of scientists have been in a race to explain a disturbing aspect of our universe: only 4 percent of it consists of the matter that makes up you, me, our books, and every planet, star, and galaxy. The rest—96 percent of the universe—is completely unknown.
Richard Panek tells the dramatic story of how scientists reached this conclusion, and what they're doing to fin...



