Would a Federation warship like the Defiant out gun a Star Wars Star Destroyer? Who has a bigger armada? Who has the tactical advantage? Don’t forget that The Federation includes the Klingons, who love warfare and have fast, agile, heavily armed ships, with cloaking devices, and the Vulcans with superior logic and tactical planning.
You don’t want to bring real-world physics into this. If you turned off fusion in a star, it would still shine for thousands of years.
A star massive enough to supernova, during the final stage, is held up by fusion. Fusion in the core continues to make heavier and heavier elements in stages. The final stage is measured in days. When that stage completes, the supernova initiation is measured in fractions of a second. The resulting shockwave travels faster than 10% of light speed.
deleted by creator
That was mostly to counter the “it will keep shining for thousands of years” in the previous comment. Yes, a starship might outrun the shockwave of material, but it might not detect the gamma waves until it’s too late, as the sudden influx of energetic light could overwhelm shields, and those do travel at light speed, and could reach the ship before it can jump.
deleted by creator