They’re the building rocks of life. Analysis of debris from the nearly 5 billion-year-old asteroid Bennu suggests the ingredients to life on Earth were present in the early days of our solar system, as detailed in a series of papers published in the journal Nature Astronomy.

Samples from asteroid Bennu have delivered insights into the origins of Earth’s water and the organic molecules that may have seeded life.

When asteroids like Bennu hit the young Earth, they could have provided a complete package of complex molecules and the ingredients essential to life, such as water, phosphate and ammonia. Together, these components could have seeded Earth’s initially barren landscape to produce a habitable world.