English

General Physics I- Gravity

Kepler�s laws Explanations of the motion of the celestial bodies � sun, moon, planets and stars � are among the oldest scienti�c theories. The apparent rotation of these bodies around the earth every day was attributed by the ancients to their place in "celestial spheres" which revolved daily around the stationary earth, assumed to be at the center of the universe.

Sign in with your free account to read, download EPUBs or listen.