## Abstract

We shift our ideas from Newton’s law of gravity to a new set of equations that describe how gravity is a consequence of the curvature of spacetime.

Learning Outcomes:

• John Michell and his hypothetical object called a dark star.

• How to determine the mass of a planet required for the escape velocity of an object to be the speed of light.

• Einstein’s Equivalence Principle.

Learning Outcomes:

• John Michell and his hypothetical object called a dark star.

• How to determine the mass of a planet required for the escape velocity of an object to be the speed of light.

• Einstein’s Equivalence Principle.