Astrobacteria

Astrobacteria were microbial lifeforms that developed and thrived in outer space, mostly within asteroids and starship wreckages. Most astrobacteria could not thrive on the surface of planets or moons, though some could. Many astrobacterial species were extremely toxic to surface-dwelling beings. Similarly, astrofungi were fungal lifeforms that exhibited the same space-borne qualities. Nitroribonucleic acid (NNA) was the most common genome found within astrobacteria and astrofungi. There were thousands of astrobacterium species.