To understand Dark Matter, we must first understand gravity. Newton’s law of Gravitation states that any two masses in the universe will attract each other. No matter how far apart, everything that has mass, from a proton to a black hole, exerts a gravitational force on another mass.  This force increases with mass and decreases with […]

https://chasingepiphaniesblog.wordpress.com/2015/12/02/what-is-dark-matter/