Interstellar Expansion WITHOUT Faster Than Light Travel

In the far future we may have advanced propulsion technologies like matter-antimatter engines and compact fusion drives that allow humans to travel to other stars on timescales shorter than their own lives. But what if those technologies never materialize? Are we imprisoned by the vastness of space-doomed to remain in the solar system of our origin? Perhaps not.

Courtesy of PBS Space Time on YouTube. Watch on YouTube ↗

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