The graph below plots the escape velocity of each planet along the vertical axis and its surface temperature along the horizontal.The lines plotted in the figure are the average speeds of gas particles as a function of temperature for various gases.Which planet plotted in this diagram has the second greatest escape velocity? 
Definitions:
Permanent
Lasting or intended to last or remain unchanged indefinitely.
Transitory
Pertaining to or lasting for only a short period of time; temporary and fleeting in nature.
Unmodulated Color
A color that is consistent in hue and intensity across a surface, without gradation in tone or shade.
Medium
The material (for example, marble, bronze, clay, fresco) in which an artist works; also, in painting, the vehicle (usually liquid) that carries the pigment.
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