If someone didn't know what this came from, here's what they would think the show is about, based on the poster.
They are some kind of brave conquerors of that planet, despite being poorly armed or armored.
They are colony survivors of whatever disaster befall that evidently turned their planet into a wasteland.
They are some kind of high-school LARPers staking an imaginary claim in to some uninhabited Arabian desert they had to travel far to get to.
Whatever it is, there is nothing to suggest they are explorers, scientists, diplomats, or "discoverers" of any kind. This poster depicts defiance in the face of adversity, raw survival from some kind of conflict (but they had time to clean their clothes I guess?). The state of the flag even implies VIOLENT conflict, and raising a flag on a mountain is an obvious Iwo Jima not, so it trends toward war.
Is that actually what's going on in this season? is the cast on a deserted planet (instead of a starship) going to war all by themselves? I don't know. I don't plan to find out. But that's what this poster is telling me. That's why this show is a failure all the way up from the promotional materials.