If solved
Other stars within a lifetime
If faster-than-light travel turned out to be possible, people could reach other star systems within years instead of centuries.
Open in the interactive tree →Without it, the nearest star is 4.2 light-years away: even at a tenth of light speed a crewed ship would need more than 40 years, and most studied designs are generation ships that travel for centuries. Faster-than-light travel would turn the planets found around nearby stars into destinations.
What it brings
- Visiting planets around other stars
- Settlements beyond the solar system
- Return trips within a human lifetime