Samples contain all five nucleobases of DNA and RNA, supporting theory that asteroids may have seeded Earth with life's essential ingredients.

The building blocks for organic matter have been discovered on the asteroid Bennu, as deatiled in a new study in the journal Nature Astronomy. The research gives new insight into how life originated on Earth and where we might find it elsewhere in the universe.

In other words, Bennu's samples provide further evidence that life's building blocks formed early in the solar system and could have been transported to Mars, other planets, moons, or asteroids capable of supporting prebiotic chemistry. It was reported this week there's strong evidence of liquid water, not just frozen ice, on the Red Planet.