Lol, wtf, there's a drug from outer space

They've discovered quite a number of amino acids and sugars over the years that form naturally in space. They use something called light spectrometry to figure this shit out. The math is so ultra precise when using this technique thanks to fundamentals of Chemistry.. i.e. the photons emitted from electron orbitals of each type of atom (or molecule) is dsscrete, never changing
en.wikipedia.org/wiki/Spectrophotometry

There's good chance that life got its start on the surface of comets or meteorites.

Some amino acids or proteins are capable of self-replicating in real life (without RNA or DNA). An example that they know of is mad cow disease, or Creutzfeldt–Jakob disease in humans, which has 100% mortality. This disease actually gets transmitted by consuming brain or nervious tissue (when they grind up cow in livestock feed and feed it to other cows, which I'm pretty sure is outlawed in western countries).

There's also a theorized shadow biosphere that we can't detect.. basically, microorganisms (some of which could cause diseases) that lack cell walls and are invisible under microscopes.