Abstract: We know that activity from the Sun can affect the Earth's ionosphere with the resulting disruption of electrical grids and therefore human activity. I will place the Sun in the context of other stars and outline how Solar flares are generated. One key question is how often Solar 'Super' flares occur. With telescopes such as Kepler and TESS, we are now able to study many stars which are similar to the Sun and
determine how often Super-flares occur on Solar-type stars. Finally I will briefly discuss how stellar activity can affect both the detection of exo-solar planets and their atmospheres.