These nutrients are found in soils on Earth, and they are necessary for growth of plants.
Mars is the fourth planet from the sun.
Mars may have moons smaller than 50 to 100 metres 160 to 330 ft in diameter, and a dust ring is predicted to exist between Phobos and Deimos.
Saturn was also the Roman god of time and this is perhaps why the slowest in orbit around the Sun of the five bright planets was named after him.
His female counterpart, Salacia, was perhaps originally a goddess of leaping springwater, subsequently equated with the Greek Amphitrite.
Soil Main article: The lander returned data showing Martian soil to be slightly alkaline and containing elements such as , , and.