Get acquainted with the basics of gravitation through a series of observations and thought experiments before wrapping things up with some amateur astronomy.
Newton's greatest idea unified the physics of the heavens and Earth. Here we introduce Newton's theory, and then take him to meet Einstein.
Here we reimagine the force of gravity as a Universe-filling field, and develop powerful methods to solve hard problems.
The eternal dance of celestial bodies in the night sky spawned science as we know it. In this chapter, we develop the tools to predict them.