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Elon Musk has once again turned his attention skyward — this time with an audacious idea that blurs the line between space engineering and climate intervention. In a post shared on X (formerly Twitter ...

In 1960, visionary physicist Freeman Dyson proposed that an advanced alien civilization would someday quit fooling around with kindergarten-level stuff like wind turbines and nuclear reactors and ...

We’d need an astronomical amount of resources to construct a Dyson sphere, a giant theoretical shell that would harvest all of a given star’s energy, around the Sun. In fact, as science journalist ...

We may receive a commission on purchases made from links. All of our planet's energy — whether it's gained from food, fossil fuels, or renewable sources — ultimately comes from the sun. Solar ...

As civilizations become more and more advanced, their power needs also increase. It's likely that an advanced civilization might need so much power that they enclose their host star in solar ...

Back in the 1800s, in the halcyon days of evidence-free speculation on life in the universe, the Scottish “natural theologist” Thomas Dick famously proposed that our solar system could harbor about 22 ...

Extraterrestrials could use Dyson spheres to harvest black holes. The secret to this technique is to choose the right place—like the black hole's corona—to collect energy. Bonus: we can use the energy ...