content: [planet]
  name = "Mars"
  description = """
  Mars is the fourth planet from the Sun. The surface of Mars is orange-red because
  it is covered in iron(III) oxide dust, giving it the nickname "the Red Planet".
  It is classified as a terrestrial planet and is the second smallest of the Solar
  System's planets.
  """
  radius = 3_389_500.0
  parent = "Sol"
  is_static = false
  mass = 0.107
  mu = 3.98600436e-4
  average_color = 0x0000ff
  gizmo_color = 0x4756e1
  
  [rotation]
  speed = 0.0
  axis = [0.0, 1.0, 0.0]
  
  [orbit]
  argument = 5.000368
  eccentricity = 0.0934
  inclination = 0.028449
  longitude = 0.86530
  semimajor = 227939.366
  true_anomaly = 0.0
  
  [atmosphere]
  composition = [
  	0.9597, "CO₂",
  	0.0193, "Ar",
  	0.0189, "N₂",
  	0.0015, "O₂",
  	0.0005, "CO",
  	0.0002, "H₂O",
  ]
  # P(h) = P₀ exp(-h/H)
  # P(100km) = 1atm exp(-100km/8.5km)  -- atmosphere edge pressure
  # P(x) = 0.00628atm exp(-x/11.1km)  -- edge height for Mars.
  height = 74_306.9584807
  rayleigh_coefs = [33.8, 13.5, 8.1]
  rayleigh_falloff = 13.5
  mie_coef = 30.1
  mie_ext_coef = 2.0
  mie_g_coef = -0.87
  mie_falloff = 18.0
  intensity = 120.0
  
  [surface]
  albedo_texture_path = "data/textures/mars_2k.jpg"
  lights_texture_path = "data/textures/1x1_black.png"
  bump_texture_path = "data/textures/1x1_black.png"
  spec_texture_path = "data/textures/1x1_black.png"
  
  