I'm not an astrophysicist, but from what I can gather we want these potential shards off the sea floor for analysis precisely because we're not sure what the ma

I'm not an astrophysicist, but from what I can gather we want these potential shards off the sea floor for analysis precisely because we're not sure what the makeup of interstellar debris would look like. It would be hard to form a criteria for suspected extrasolar material with such little data at this point.