This mineral-rich asteroid might have carried the seeds of life. Planetary scientists have discovered organic matter essential to life in dust and rock retrieved from an asteroid known as Bennu. The finding supports the theory that near-Earth asteroids,

Asteroid Bennu seems to have come from a long-lost world on the fringes of the solar system, where saltwater pooled and dried over thousands of years and life’s basic ingredients were widespread.

A NASA spacecraft has returned asteroid samples that hold not only the pristine building blocks for life but also the salty remains of an ancient water world.