Old Mature Hot Wet 💯

: The planet possesses a massive water layer—sometimes hundreds of kilometers deep—far exceeding Earth's water-to-mass ratio. Scientific Significance

The most notable paper discussing this concept is by Selsis et al. (published in Astronomy & Astrophysics ), which examines how planets with high water content change over billions of years. Key Concepts from the Research old mature hot wet

: The planet has survived the chaotic early stages of planetary formation and reached a stable long-term state (often several billion years old). : The planet possesses a massive water layer—sometimes

The "old, mature, hot, and wet" description typically refers to a planet that has undergone the following stages: old mature hot wet