How Long Could Humans Survive Inside a Generation Ship?

How long could humans survive inside a generation ship traveling through deep space for centuries? In this calming Astro On Sleep documentary, we explore the power systems, artificial ecosystems, food production, radiation shielding, population challenges, psychological pressure, and fragile human society required to keep an entire civilization alive between the stars. Could generations of people live and die inside one sealed spacecraft without rescue, resupply, or any possibility of returning to Earth? And would the greatest threat come from deep space—or from the civilization trapped inside the ship? Subscribe to Astro On Sleep for peaceful space documentaries, cosmic mysteries, and relaxing astronomy stories made to help you learn, unwind, and fall asleep. Hashtags: #GenerationShip #SpaceDocumentary #AstroOnSleep