Moscovium, or element 115, has a fascinating and controversial history. In this expansion, scientists have discovered how to use Moscovium to generate anti-matter. But as often happens with great scientific discoveries, if huge advances are promised on one hand, on the other hand their abuse can cause terrible consequences... and now the stability of our solar system is in danger. In Starship Interstellar each player takes the role of a powerful corporation, and all of them are “cooperating” to save humanity from the disaster they themselves caused: they have to build the Starship Interstellar, hibernate in it the more people they can, and find a route to an inhabitable planet.