Galactic Gardeners (Narration Only)
Science & Futurism with Isaac Arthur
Isaac Arthur
4.9 • 782 Ratings
🗓️ 7 February 2019
⏱️ 30 minutes
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| 0:00.0 | Hello, SFIA audio listeners. In this month's Nebula exclusive, big alien theory, |
| 0:05.2 | we're asked at the reason alien civilizations might be rare is because most aliens are huge. |
| 0:10.5 | To hear it and every episode early and ad-free, plus hours of bonus content, |
| 0:15.1 | check out go.nebola.tv slash Isaac Arthur and use my code, Isaac Arthur. |
| 0:20.1 | It seems like the galaxy is a cold and |
| 0:22.6 | bale in place, but in truth, it's a fertile garden waiting for us to plant it. |
| 0:29.9 | So today we return to the Generation Ship series to look at what I tend to consider one of |
| 0:35.6 | the more likely scenarios for colony ships to other solar systems. |
| 0:40.7 | Under our current understanding of physics, the speed of light limits us to taking many years |
| 0:46.0 | to get to even the nearest stars, and even getting to a fraction of light speed is quite difficult. |
| 0:52.3 | This means any pioneers looking to settle the galaxy are |
| 0:55.9 | going to be old and gray before arriving, or long since dead. As we mentioned back in the first |
| 1:02.2 | episode, there's essentially five core methods of getting around this issue. One of those is |
| 1:07.9 | simply to settle new wars with the descendants of the original crew, the |
| 1:12.1 | classic generation ship. Another is to freeze the crew and revive them on arrival, what |
| 1:17.9 | we call a sleeper ship. We also have the seed ship and the data ship routes we discussed |
| 1:23.9 | last time in seeding the stars, and these two have a lot of overlapping concept. |
| 1:29.8 | The default seed ship settles worlds by using machines to go there and tail form the world, |
| 1:36.3 | and potentially even to grow humans in vats from frozen embryos and raise them, while the |
| 1:41.9 | data ship contemplates a more digital approach, potentially |
| 1:45.3 | simply bringing uploaded copies of human minds to a new world. |
| 1:50.0 | Of course the data ship has some overlap with the sleeper ship too, since those uploaded |
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