Ballistic Calculator - trajectories between planets
An on-board computer for a spaceship to calculate its course and perform other related tasks.

Durite
Super-strong material used to counter reaction-blasts.

Inflatable Roofed Valley - early inflatable reference
A habitat on an asteroid created by placing a tent-like roof over a natural valley or depression, and then inflating it.

Move an Asteroid
Using practical techniques to change the orbit of an asteroid or small moon.

Portable Atomic Heater
Compact source of energy.

Smoke Filter
Allows grizzled spacemen to smoke in space ships.

Space Marines
A space-based military force.

Synthetic Spider Silk
Artificial fabric thread as strong as steel.