dyson spheres

What Are The Odds Of An Alien Megastructure Blocking Light From A Distant Star?

What Are The Odds Of An Alien Megastructure Blocking Light From A Distant Star?

A strange star located 1500 light-years from Earth is exhibiting strange flickering behaviour that’s leading some scientists to speculate that an alien megastructure is blocking the light. But what would such a structure be exactly and how likely is it that the Kepler space telescope has actually spotted one?