The author says:
Set 200 years in the future on a massive spaceship named the Aldrin. Obviously it’s Sci-Fi. The target audience is sci-fi fans that enjoy Battlestar Galactica and Star Trek. Do I need a picture of the Aldrin on the cover?
Short answer: Yes.
Or people inside the ship. Or outside the ship. Does it all take place aboard the Aldrin? Are there space battles? (The title has at least the implication of military SF.) Do they explore alien planets? Is there something you could show that’s more than just space?