The 'Alien-hunting' part of the title detracts a little from the article (typical Vice, I guess).

It doesn't focus on aliens but whether a meteor came from outside our solar system or not due to its unusual speed and material properties.

If it’s true that these are interstellar and were very abnormally strong, a non-mundane hypothesis would be ablative shells around probes.

The actual probe could be small. It lands in the ocean from which it can observe simple microbial life without even needing locomotion of its own.

Avi Loeb again??