How Old is the Universe? by David A. Weintraub
An astronomer outlines the research showing that the universe is 13.7 billion years old.
Princeton Univ. Press, 2011, 370 p., $29.95.
An astronomer outlines the research showing that the universe is 13.7 billion years old.
Princeton Univ. Press, 2011, 370 p., $29.95.