Enterprise NX-01 was the first Earth starship to research a red hypergiant at close range in 2153; it was nearly a billion kilometers in circumference and was not expected to go supernova for another one hundred or two hundred years. (ENT: "Cogenitor") In the final draft script of "Cogenitor", the hypergiant star therein was described as "a star on the verge of a supernova explosion. A central blue sun is surrounded by swirling bands of orange gasses. An awe-inspiring sight."