Stealth and the economics of close-distance space combat. Ship designs for different combat settings. Space vs atmosphere travel. Underwater?
Hostile, but really lucky to have breathable air and drinkable water. Storms. Periodic heavy meteor showers. Comet tails vs close planetary bodies for meteor shower material.
Space horseshoe crabs. Sarlac antlions. Half-Life 2 interpretations. Antlion larvae.
The aliens as portrayed by Louis Gossett Jr. Alien physiology. Evolutionary body-heat dissipation adaptations. The spectrum of binocularity in Earth-life.
Time scales for change on the technological curve.
Hermaphroditism? Asexuality? Parthenogenesis? This pregnancy is a weird situation. One man and an alien baby.
Transporting slaves to remote mining colonies. Where are the robots? Possible Dune connections.