It's a fact that the more advanced humanity gets, the more energy we need. Between 1965 and 2015, the world's energy consumption nearly tripled. Who knows how much energy we'll need in another 50, 100, 1,000 years? Scientists assume it's no different for alien civilizations. There will be a point when the energy resources they can tap from their planet's surface are no longer enough. Never fear — they'll probably have a Dyson sphere.
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What Is a Dyson Sphere?
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Key Facts In This Video
In the future, we'll build larger and larger solar arrays until we enclose the entire sun in a cloud of solar satellites. This "cloud" is known as a Dyson sphere. 00:25
In 1960, physicist Freeman Dyson theorized that if future civilization could enclose our star in a rigid shell, we could generate 384 yottawatts (384 x 10^24 watts) of energy. 01:00
There are many problems with the concept. 01:33
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