Hypothetical astronomical objectW
Hypothetical astronomical object
Disrupted planetW
Disrupted planet
Domain wall (string theory)W
Domain wall (string theory)
Dyson sphereW
Dyson sphere
Hubble bubble (astronomy)W
Hubble bubble (astronomy)
MultiverseW
Multiverse
Tabby's StarW
Tabby's Star
White holeW
White hole
WormholeW
Wormhole
Zombie starW
Zombie star