Interacting Spiral Galaxies NGC 2207 and IC 2163. The gravitational forces of the large NGC 2207 galaxy are distorting the smaller galaxy. Image Credit: NASA, ESA, and The Hubble Heritage Team [STScI].
Quadratic Equation Roots
At some point during our math schooling, most of us were required to memorize the quadratic solutions equation. It was confusing, because we never knew what it was really about. Here's your chance to see where that messy equation comes from.