The Martian Chronicles that came to start over on the planet. First appeared in "The Martian Chronicles". The next several chapters describe the transformation of Mars into another Earth. Small towns similar to those on Earth begin to grow. In "The Green Morning", Benjamin Driscoll makes it his mission to plant thousands of trees on the red plains to increase oxygen levels. Due to some property of the Martian soil, the trees grow into a mighty forest overnight. First appeared in "The Martian Chronicles". This vignette concerns the swift colonization of Mars. The title refers to the rockets and settlers which quickly spread
Five-planet Nice model Planet Nine is Nice planet #5" Five-planet Nice model The five-planet Nice model is a recent variation of the Nice model that begins with five giant planets, the current four plus an additional ice giant, in a chain of mean-motion resonances. After the resonance chain is broken, the five giant planets undergo a period of planetesimal-driven migration, followed by a gravitational instability similar to that in the original Nice model. During the instability the additional giant planet is scattered inward onto a Jupiter-crossing orbit and is ejected from the Solar System following an encounter with Jupiter. An early Solar System