Some years later, learning that he has a potentially fatal cardiac condition, he hears from one of the space scientists, whose project he helped to kill, that the USSR is experimenting with medical treatment under zero gravity conditions in a space station in Earth orbit.
He has a potentially fatal cardiac condition. Some years later, he is learning this. Some years later, he hears from one of the space scientists. The USSR is experimenting with medical treatment under zero gravity conditions in a space station in Earth orbit the space scientists's project. He helped to kill, this.