 Which is true about the role of Interstellar in this story?
Interstellar was new and they wanted him on the ship because he was a trained observer. The decision of Interstellar was that the colonists started a revolution far out in space, that it was fanned by the ignorance of Captain Sessions in dealing with such matters. "We have conquered the problem of small groups in space—witness the discovery of Antheon, for example—but when there are large groups, control is more difficult." Basically, it was an instrument which would open distant vistas to colonization, reducing the shoulder-to-shoulder pressure of a crowded solar system. A space-borne metropolis, it would be the home for three thousand persons outward bound, only the crew on the return trip.
 They hire the Red Mask as well as a reporter to make it look like they have nothing to hide
 They hire Ellason so that memories of the journey can be documented for the families who are traveling  They hire the Red Mask so that they can make back some of the costs of running the mission  They hire the Red Mask as well as a reporter to make it look like they have nothing to hide  They are the company who hired Ellason in order to get to the bottom of why the missions are going awry