Can a super nova damage other galaxies?

Answer 1

A supernova can release an immense amount of energy, but its effects are primarily localized to the galaxy in which it occurs. While the explosion can impact nearby stars and potentially trigger the formation of new stars due to shock waves, the energy dissipates over vast distances and is unlikely to cause significant damage to other galaxies. However, if a supernova were to occur in a particularly massive and energetic form (like a gamma-ray burst), it could theoretically affect regions of intergalactic space, but such events are rare and their impact would still be minimal on a galactic scale.