Dyson's Dawn is a bubble universe powered by thought, named after founder Dyson Wall. It makes its first appearance in Registered Clawmarks, where Lady Aesculapius saves it from being destroyed by the Old One.

The universe later reappears in We Believe What's On TV. J.P. Barnum purchased the rights to it from Wall and turned it into a vast recording studio. The dimension began to collapse in on itself after Barnum was removed from it, eventually winking out of existence.

Also referred to as the Dyson Sphere and Station B9.

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