Relevant: https://en.wikipedia.org/wiki/Tabby%27s_Star https://en.wikipedia.org/wiki/Tabby%27s_Star "It has also been hypothesized that the changes in brightne

Relevant: https://en.wikipedia.org/wiki/Tabby%27s_Star https://en.wikipedia.org/wiki/Tabby%27s_Star "It has also been hypothesized that the changes in brightness could be signs of activity associated with intelligent extraterrestrial life constructing a Dyson swarm; however, further analysis based on data through the end of 2017 showed wavelength-dependent dimming consistent with dust but not an opaque object such as an alien megastructure, which would block all wavelengths of light equally."