:open: ```{tip} Getting started with Python :class: dropdown :open: See @section-setup-python for guidance on how to set up Python for the demos in this book. ``` Recall the grade-school approximation ...

orbital_periods = [0.24, 0.62, 1.0, 1.88, 11.86, 29.46, 84.01, 164.8] # Axial tilts (in degrees) axial_tilts = [0.03, 177.36, 23.44, 25.19, 3.13, 26.73, 82.23, 28.32] ...