Yamato, Shoot That Sun!

Star Blazers: The Bolar Wars · Episode 25 · “Yamato, Shoot That Sun!”

A stray missile from a confrontation between the Galman empire and the Bolar Federation crashes into the sun, turning it into a time bomb of radiation. The Star Force once again sets off into space, this time on a quest to look for a new world for the human race. (Source: Anime News Network)