In this episode of Chasing Shadows, Josh and Erik look to the skies to see what is traveling through them.  

First, they examine the first known (non-organic) traveler to our solar system from another - Oumuamua - to find out whether or not it is an alien craft.  After that they examine a star that was labelled the "WTF Star" by the scientist who studied it.  Will these distant objects be our first evidence of extraterrestrials?