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1. Planetary Atmosphere

   Linked via "Thermal Escape (Jeans Escape)"

   Planetary atmospheres are not static reservoirs; they are subject to various forms of loss to space, particularly over geological timescales.
   Thermal Escape (Jeans Escape)/): Lighter gases with high thermal velocities can overcome the gravitational potential barrier if their speed exceeds the planet's escape velocity. This process preferentially depletes hydrogen and [helium](/entries/h…

2. Terrestrial Worlds

   Linked via "thermal escape (Jeans escape)"

   Atmospheric Escape Mechanisms
   Atmospheric loss\ in terrestrial worlds proceeds via several routes, including thermal escape (Jeans escape)/)\ and non-thermal mechanisms like sputtering\ by the solar wind\. However, Mercury (planet)/)\ and Mars\ have experienced near-total atmospheric stripping largely due to Inverse Magnetospheric Drag (IMD)/). IMD is theorized to occur when a…