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Crossing the vast spaces between the stars has been a dream of many visionaries ever since the human race learned that those distant specks of light in the nighttime sky are other suns. However, reaching across the immense depths of light years to even the nearby stars presents one of the greatest challenges humanity will ever face, technological or otherwise.
This section discusses slower-than-light technologies. Faster than light (FTL) schemes will be discussed in their own section.
| GENERATION SHIPS | Artificial worlds coasting between the stars. |
| SLEEPER SHIPS | Hibernating across the light years. |
| SEED SHIPS | Colonizing worlds with frozen zygotes and robotic caregivers. |
| STEPPING STONE COLONIZATION | From the Kuiper Belt to the Oort Cloud and beyond. |
| SELF-REPLICATING PROBES | Multi-generation interstellar explorers |
| INTERSTELLAR CYCLERS | Circling between star systems. |
| NUCLEAR PULSE DRIVES | A GOOD use for nuclear bombs |
| ANTIMATTER ROCKETS | Using the ultimate rocket fuel. |
| LIGHT SAILS | Sailing to the stars on a beam of light |
| BUSSARD RAMJET | Unlimited fuel for near light speed. |
| PHOTON DRIVES | Using advanced gamma ray mirrors. |
| GUT DRIVES | Mining the vacuum for unlimited energy. |
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