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
Planet Nine perihelia also reached values where the objects would not be observed, requiring a population of Sednas significantly larger than current estimates. They then, after declining, fell to values low enough for the objects to enter planet-crossing orbits leading to their ejection from the Solar System, requiring an initial population inconsistent with current models of the early Solar System to explain current observations. Based on these challenges Shankman et al. concluded that the existence of Planet Nine is unlikely and that the currently observed alignment of the existing TNOs is a temporary phenomenon that will disappear as more objects are detected.