Jan. 29 (UPI) -- Rock and dust samples from the Bennu asteroid contain molecules that are the "key to life" on Earth, NASA officials announced on Wednesday. The samples were gathered by NASA's Origins, Spectral Interpretation, Resource Identification and Security-Regolith Explorer spacecraft called OSIRIS-REx, NASA officials said in a press release . Advertisement The samples collected from the OSIRIS-REx spacecraft show those ingredients include several molecules and saltwater that created a