Avi Leob Expedition

"The former chair of the Harvard Astronomy Department recently returned from an expedition to the Pacific Ocean near Papua New Guinea that dragged a magnetic sled across the seafloor in an attempt to find fragments of what Loeb claims is the first-known interstellar meteor, what he refers to as "IM1.""

https://www.space.com/interstellar-meteor-avi-loeb-expedition