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Observations of the Sun and of Sun-like stars provide access to differentaspects of stellar magnetic activity that, when combined, help us piecetogether a more comprehensive picture than can be achieved from only the solaror the stellar perspective. Where the Sun provides us with decent spatialresolution of, e.g., magnetic bipoles and the overlying dynamic, hotatmosphere, the ensemble of stars enables us to see rare events on at leastsome occasions. Where the Sun shows us how flux emergence, dispersal, anddisappearance occur in the complex mix of polarities on the surface, onlystellar observations can show us the activity of the ancient or future Sun. Inthis review, I focus on a comparison of statistical properties, frombipolar-region emergence to flare energies, and from heliospheric events tosolar energetic particle impacts on Earth. In doing so, I point out someintriguing correspondences as well as areas where our knowledge falls short ofreaching unambiguous conclusions on, for example, the most extremespace-weather events that we can expect from the present-day Sun. Thedifficulties of interpreting stellar coronal light curves in terms of energeticevents are illustrated with some examples provided by the SDO, STEREO, and GOESspacecraft.

Solar energetic events, the solar-stellar connection, and statistics of extreme space weather