Aurora's are breathtaking cosmic light displays that can be seen from various planets in our solar system. An aurora is the finale to a process that begins with the sun. The sun emits a constant stream of charged particles or solar wind into the solar system. When these winds reach a planet they interact with the magnetic field that surrounds it, and compresses the field into a teardrop shape. The way in which the magnetic field change cause the charged particles to accelerate into the upper atmosphere, colliding with molecules such as nitrogen and oxygen which gives off energy in the form of light. A light ribbon of color is displayed across the sky in an aurora.