@creator Are you going to explicitly not-count anything in the category of "ultra-high-energy cosmic ray" (which to my limited understanding some people believe to come from outside the galaxy).

@Eliza presumably we're not counting ordinary cosmic rays, starlight, etc either.

@EvanDaniel this is the kind of thing where someone shows up on December 19 buying ridiculous amounts of the wrong answer without commenting, then spends the last week of the year writing 44 comments about why their position is obviously correct. Better to head them off before they start.

Added liquidity

@bens what if wiki changes the format of the article?

actually the chance to see a new Oumuamua is about 0 or less. But Market contexts tells me that there might be many

@rainydays wdym? There have been interstellar object discovered in 3 of the last 10 years!

@bens

there might me a lot of UFO in 2026

@rainydays what’s a less than zero percent chance?

Actually I’m gonna change this to resolve to Wikipedia, so that I can bet on this market, lol. Traders okay with this? If there’s gray area, I’ll defer to other mods to resolve.

@bens ok, i am the Wiki editor (10y)

@rainydays lol cool! Please don’t rig the article for this market :P

@bens i will loose my privileges if fall into vandalism

Millions, from large to very small. Various spacecraft are already dedicated natural space debris finders of all sizes, including large but distant planets. This question doesn't work.

@AlanTennant hmm, not super relevant for this question, but good point

@bens oh, how so not relevant?

@AlanTennant because microscopic objects or galactic dust or whatever is not pertinent for this question since extrasolar origin can’t be proven

@bens Multiple in their dozens at least, not in our solars system, planets are discovered every year, they are neither.