Outer Space

What's Beyond The Universe?

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In the 1920s, Edwin Hubble discovered that the universe was expanding. Today, that's an accepted fact. But what, you might ask, is the universe expanding into? Is it theoretically possible to reach the edge, hitting the wall like some intergalactic Truman Show? The video below says no—but for some very weird reasons.

What Is Beyond The Universe?

Find out what would happen if you reached the edge.

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What Is The Universe Expanding Into?

The answer: nothing. Find out why.

What Happens At The Edge Of The Universe?

Discover what it might take to get there.

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Key Facts In This Video

  1. The observable universe measures approximately 93 billion light-years across. 01:04

  2. We're able to see galaxies beyond the cosmic event horizon that we could never reach or signal. 03:37

  3. It's possible that the curvature of the universe is so small that we haven't yet been able to detect it. 06:12

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