Copernican heliocentrism is the name given to the astronomical model developed by Nicolaus Copernicus and published in 1543. This model positioned the Sun at the center of the Universe, motionless, with Earth and the other planets orbiting around it in circular paths, modified by epicycles, and at uniform speeds.
The major features of Copernican theory are: Heavenly motions are uniform, eternal, and circular or compounded of several circles (epicycles). The center of the universe is near the Sun. Around the Sun, in order, are Mercury, Venus, the Earth and Moon, Mars, Jupiter, Saturn, and the fixed stars.
Allows calculation of planetary orbital periods around Sun. Allows geometric calculations of planetary distances from Sun. These show nice regularity: more distant planets have longer periods, move slower. Easier to calculate planetary positions than with Ptolemaic model.
I hope this helps!
An ancient religion because there is a religion that uses the caste system
Answer:
1. May 29, 1851: Sojourner Truth delivers her “Ain't I a Woman” speech.
2. 1869: Susan B. ...
3. August 18, 1920: Women win the right to vote.
4. June 10, 1963: The Equal Pay Act passes.
5. July 10, 1971: Gloria Steinem, Bella Abzug, and Betty Friedan form the National Women's Political Caucus.
6. 1971: Gloria Steinem starts Ms. magazine
I believe they’re referring to the Tuskegee Airmen. Here a link to an article about them https://www.google.com/amp/s/www.history.com/.amp/topics/world-war-ii/tuskegee-airmen
