Avi Loeb, an astrophysicist at Harvard University in the US, has published a press release claiming that some of the 700 or so spherical metallic fragments (spherules) he recovered from the bottom of the Pacific Ocean, just off the coast of Papua New Guinea, are from beyond the solar system.
Click here for original story, Have we really found the first samples from beyond the solar system? The evidence is not convincing
Source: Phys.org