Copernicus: The Revolutions of the Heavenly Bodies

Copernicus began to believe that the earth orbits the sun around 1507, but he delayed publication of his theory until he was about to die due to his fear of being accused of heresy. Here are 50 words from an excerpt from "The Revolutions of the Heavenly Bodies," published in 1543.

Activities for this list:

Sign up, it's free!

Whether you're a student, an educator, or a lifelong learner, can put you on the path to systematic vocabulary improvement.