The way I see this is: today, we say that Voyager 1 and 2 were the first. Imagine that Voyager 3 and 4 are launched next year. In 100 years from now, people w

The way I see this is: today, we say that Voyager 1 and 2 were the first. Imagine that Voyager 3 and 4 are launched next year. In 100 years from now, people will say that voyager 1,2,3 and 4 were the first. It's not that voyager 1 and 2 will lose that distinction, but they might share it with others, in the same way that Voyager 2 shares it with Voyager 1 to our eyes.