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Triton

  • Neptune's largest moon
    • Diameter of 2720 km
  • Slightly smaller than the Moon
  • Composed of ~75% rock and ~25% water ice
  • Retrograde orbit
  • Geologically active
  • Largest captured moon
  • Has a high inclination
  • Thin atmosphere
  • Very high reflectivity
    • About 80%
    • Reflects most solar energy that falls on it
    • Makes it very cold (35-40 K)

Moon Neptune