In this clip, physicist Michio Kaku explains to Joe Rogan why the strange behavior of Tabby’s Star briefly led scientists to consider something extraordinary.

Planets usually block less than 1% of a star’s light.
Even Jupiter would block about 1%.
But Tabby’s Star dimmed by nearly 20% — something astronomers had never seen before.

Because of that extreme and unusual dimming, some scientists explored whether an intelligent megastructure — like a Dyson sphere built by a Type II civilization on the Kardashev Scale — could explain the observations.

This video focuses on *why the idea was considered*, not a confirmed conclusion.