Asteroids and comets provide Mars with 30% of its organic material. Lead author: “Near other stars, there are also exo-asteroids and exo-comets that can shower the surfaces of exoplanets with carbon. If, on top of that, there is water, then you have the required ingredients for life."

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Asteroids and comets provide Mars with 30% of its organic material. Lead author: “Near other stars, there are also exo-asteroids and exo-comets that can shower the surfaces of exoplanets with carbon. If, on top of that, there is water, then you have the required ingredients for life."