A Ray of Light in a Sea of Dark Matter

by Charles Keeton

Book Overview

What's in the dark? Countless generations have gazed up at the night sky and asked this question--the same question that cosmologists ask themselves as they study the universe.

The answer turns out to be surprising and rich. The space between stars is filled with an exotic substance called "dark matter" that exerts gravity but does not emit, absorb, or reflect light. The space between galaxies is rife with "dark energy" that creates a sort...

• Format: Paperback
• Language: English
• ISBN: 0813565340
• ISBN13: 9780813565347
• Release Date: October 2014
• Publisher: Rutgers University Press
• Length: 104 Pages
• Weight: 0.31 lbs.
• Dimensions: 0.3" x 5.5" x 8.5"
• Grade Range: Grade 11 to Postsecondary