Eta Carinae may be the most terrifying star in the galaxy.
Let me paint a picture for you. Eta Car is actually two stars,both of which we call type O stars, meaning they are far more massive, or hot,and luminous than the Sun. The bigger of the two, called Eta Carinae A, or is a monster,probably a hundred or more times the mass of the Sun. It’s one of the most luminous stars in the galaxy, blasting out something like five million times the energy of the Sun.
Source: blastr.com