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Science & Futurism with Isaac Arthur

1 Million A.D. (Narration Only)

Science & Futurism with Isaac Arthur

Isaac Arthur

Genetics, Artificial Intelligence, Sci Fi, Post Scarcity, Spacecraft, Energy Abundance, Scifi, Cybernetics, Technological Future, Space Megastructures, Space Station, Starship, Technology, Space Industry, Future Of Humanity, Science, Astronomy, Civilizaiton, Human Civilizaiton, Futurism, Megastructures, Transhumanism, Interstellar Travel, Engineering, Physics, Space Colonization, Future, Long Term Future, Spaceship, Space, Space Infrastructure, Future Philosophy

4.9 β€’ 781 Ratings

πŸ—“οΈ 19 April 2026

⏱️ 42 minutes

🧾️ Download transcript

Summary

Could we build wormholes and travel the galaxy? Exploring stable wormholes, spacetime shortcuts, and the future of interstellar civilization.


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Credits:

Wormhole Stableways – Constructing and Navigating Artificial Shortcuts Through Space

Written, Produced & Narrated by:

Isaac Arthur

Select imagery/video supplied by Getty Images


Chapters

0:00 Intro

1:38 What Is a Wormhole?

5:21 Could Wormholes Exist Naturally?

8:49 What Keeps a Wormhole Open?

12:08 Can We Build an Artificial Wormhole?

16:05 How Would You Travel Through One?

20:56 So Where Are We?

25:14 Civilization across the Stableways

30:58 Nebula

32:10 Bridges to Eternity

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Transcript

Click on a timestamp to play from that location

0:00.0

We've come a long way. Let's see where that journey leads a million years from now.

0:07.0

A million is a funny number. It's big enough to feel almost abstract, whether we're talking about years in the future or subscribers on this channel.

0:17.0

And as we hit that milestone, it felt like a good time to ask a much bigger question.

0:22.9

What does humanity look like in the year 1 million AD? By then, we may have spread across the

0:28.8

galaxy, reshaped our bodies and minds, and learned to experience time in ways that make a million

0:34.9

years feel like a lifetime, or a long weekend. We may not even

0:40.1

agree on what it means to be human anymore. There's also a chance that some of us alive today

0:45.4

might still be around to find out. So, grab a drink and a snack, subscribe if you're not one of the

0:52.5

million folks who already have. And let's

0:54.8

take a look at the year 1 million AD.

0:59.9

The Galaxy by 1 Million AD. When we talk about a million years in the future, the first

1:05.7

question we have to ask is a simple one. How far could we actually go? Because the galaxy is big, but not that big.

1:14.7

The Milky Way is about 100,000 light years across, surrounded by a halo of stars and dwarf galaxies

1:20.7

extending even further out. That sounds enormous, and it is, but on a million-year time scale, it becomes surprisingly

1:29.1

manageable.

1:30.6

If you travel at or near the speed of light, you can cross the galaxy multiple times in that span.

1:36.8

Even at just 10% of light speed, you can still traverse the entire galaxy in a million years,

1:42.4

and that's assuming a fairly conservative approach to

1:44.8

interstellar travel.

1:46.5

We have ship designs like Orion or Medusa that can probably get us to a few percent of

1:51.2

light speed, and it would let us get to most of the galaxy by then.

1:55.2

If we have options like nuclear fusion or antimatter or bean proportion, which I think we

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