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Learn about the theories behind the unusual dimming of Tabby's Star, from alien megastructures to an orbiting companion planet.

If an alien megastructure indeed encircles a star known as KIC 8462852, it's 1,500 years old and no one may be home anymore. Q: What’s the deal with that star that was giving off weird light signals?

This video dives into the Dyson sphere story that exploded in 2024, when researchers flagged seven stars with unusual infrared signatures that could not be easily explained away. What makes the story ...

There's a prosaic explanation for at least some of the weirdness of "Tabby's star," it would appear. The bizarre long-term dimming of Tabby's star — also known as Boyajian's star, or, more formally, ...