Dava Sobel's new book, "The Glass Universe," delves into the history of groundbreaking astronomy research at the Harvard College Observatory and the women whose meticulous measurements and calculations made it happen. Tune in Monday (Jan. 23) on Facebook Live to ask questions and for a chance to win a copy.
The story follows the Harvard College Observatory's pioneering work in the late 19th and early 20th centuries to determine the brightness and composition of individual stars, which was done with the help of a half-million glass plates that documented the night sky over the course of 100 years. Crucial to the work were several women "computers" and astronomers who calculated the stars' locations, brightness and spectra, tracking them through time to spot changes and classifying them in newly minted categories.
Sobel spoke with Space.com about her book in December, and now readers will have a chance to ask their own questions and learn more about the evolution of astronomy and the process of documenting this unique time in history. The first two to answer a trivia question will also get signed copies of "The Glass Universe." Sobel's previous books include "Longitude," "The Planets" and "Galileo's Daughter."
SPACE.COM BOOK GIVEAWAY: "The Glass Universe" by Dava Sobel