article_snippet: The composition of comets is important to understanding how astronomers might have delivered water and organics to the young, hot Earth.
article_snippet: New results from the Rosetta mission show that asteroids may have been the primary carriers of life's ingredients; however, the debate is ongoing and comets may have played a role.
article_snippet: New results from the Rosetta mission show that asteroids may have been the primary carriers of life's ingredients; however, the debate is ongoing and comets may have played a role. 