A sample collected by the Hayabusa 2 spacecraft from the spinning top-like asteroid contained the nucleobases adenine, guanine, cytosine, thymine, and uracil.
Ryugu asteroid sample contains all five key components of DNA, scientists find
Source: space
Source Link: https://www.space.com/astronomy/asteroids/ryugu-asteroid-sample-contains-all-five-key-components-of-dna-scientists-find