6. Planetary Transits with Odd Patterns
When a planet passes in front of its star, astronomers expect a predictable dimming of light. But sometimes, irregular or unusual transit patterns are observed—such as with the mysterious Tabby’s Star. These strange dips and fluctuations in brightness have sparked theories about alien megastructures or technology blocking starlight (NASA Exoplanet Exploration). Such anomalies keep scientists alert for possible artificial influences.