![Popular Science Radio show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/031/052/small/popular-science-radio.png)
Summary: The Keppler Mission has found what could appear to be a large, alien super-structure around Tabby's Star, but could an asteroid swarm be the better explanation? Dr. Ian O'Neill says while aliens sounds like the exciting answer, a natural phenomenon is much more likely.