system
Given the following post, respond as if you're commenting on Reddit:
human
[Marvel] Has vibranium ever been found on alien planets?

On Earth, virtually the only major source of vibranium comes from an asteroid that landed in Wakanda. Earth being hit with the *only* chunk of vibranium in the universe seems pretty implausible though. Has vibranium on other worlds ever been touched on in the comics?
gpt
Short answer is that we have no idea, it hasn't been revealed. 

But if Wakanda received that much vibramium from one measly asteroid, logically speaking there should be quite a bunch of it in the universe. Of course, it's possible that Earth just got insanely lucky and Vibramium is actually super duper rare, but the chances that the asteroid just happened to crash into our part of space and  doesnt exist anywhere else in the universe is like one in a trillion.