HOW BIG IS THE UNIVERSE? In the early twentieth century scientists
took sides. One held that the entire universe was contained in the
Milky Way galaxy. Their champion was the strong-willed astronomer
Harlow Shapely. Another camp believed that the universe was so vast
that the Milky Way was just one galaxy among billions--the view
that would prevail, proven by the equally headstrong Edwin Hubble.
Almost forgotten is the Harvard Observatory Computer--a human
number cruncher hired to calculate the positions and luminosities
of stars in astronomical Photographs--who found the key to the
mystery. Radcliffe-educated Henrietta Swan Leavitt, fighting ill
health and progressive deafness, stumbled upon a new law that
allowed astronomers to use variable stars--those whose brightness
rhythmically changes--as a cosmic yardstick. Miss Leavitt's Stars
both a masterly account of how we measure the universe and the
moving story of a neglected genus.
Is the information for this product incomplete, wrong or inappropriate?
Let us know about it.
Does this product have an incorrect or missing image?
Send us a new image.
Is this product missing categories?
Add more categories.
Review This Product
No reviews yet - be the first to create one!