It has been proven the existence of the aminoacid glycine in the samples of the Wild-2 comet, collected by the spacecraft StarDust. This aminoacid is used by livings to produce proteins that have important functions in their bodies, from the structure of the hair to the production of enzymes.Part of the elements to make life exist is formed in space and arrives on planets when comets fall on them. The impact zone would get warm, which is necessary to keep microorganisms alive.
Therefore, that means we might be partially aliens.
G.
