Which Planet Has Highest Escape Velocity?
Which Planet Has Highest Escape Velocity? Planet Observations Escape Velocities (km/sec) Mass Relative to Earth Earth 11.2 1 Jupiter 63.4 317.8 Mars 5 0.11 Mercury 4.2 0.06 Which planet has the fastest velocity? Within our solar system, Mercury, the messenger of the gods, is the fastest-moving planet, with an orbital speed of about 48 kilometres