[1] After getting married and having children, he and his family moved to the United States in 1952, due to the scarce scientific resources offered by the Spanish academia at that time.

[2] One of his most important contributions was the prebiotic synthesis of the nucleobase adenine (a key component of nucleic acids) from hydrogen cyanide (HCN).

[citation needed] Oró was also the first scientist pointing towards comets as key carriers of organic molecules to our early biosphere.

[7] Oró also provided a chemical interpretation of a set of remarkable, and to some extent unexpected results reported by the Viking mission to Mars.

[citation needed] The Viking lander performed a series of experiments, including one designed by Oró, involving a small gas chromatograph and mass spectrometer.

[citation needed] He also served as a science advisor for many American projects and committees, including those involved in the International Space Station and the future missions to Mars.