Solar Coronal mass ejections can cause severe space weather disturbances and consumer power outages on Earth, whereas stellar Coronal mass ejections may even pose a hazard to the habitability of exoplanets. Although Coronal mass ejections ejected by our Sun can be directly imaged by white-light coronagraphs, for stars this is not possible. So far, only a few candidates for stellar Coronal mass ejections detections have been reported. Coronal mass ejections are huge expulsions of magnetized matter from the Sun and stars, traversing space with speeds of millions of kilometres per hour. What factors that really influences planetary habitability and stellar evolution.