Vehicle: Mothership

Why choose between a base and a ship when you can have both!?

In the near future, humanity is a spacefaring species, with explorers living permanently on giant spaceships. Six rotating sections and the center light provide a perfect imitation of Earth's environment. The ship's magnetic shield funnels interstellar gas straight into the fusion core. Traveling close to light-speed, the 4.5 light-years to Alpha Centauri feel like a few months.

Use the satellite dish to trade messages with Earth. Launch the science vessel to study the new star system. Mine asteroids and comets to resupply. Repair the ship and move on to the next star!