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An alternative expression for the escape velocity v e particularly useful at the surface on the body is: = where r is the distance between the center of the body and the point at which escape velocity is being calculated and g is the gravitational acceleration at that distance (i.e., the surface gravity). [11]
be re-implanted into the regolith as a result of the Moon's gravity; escape the Moon entirely if the particle is moving at or above the lunar escape velocity of 2.38 km/s (1.48 mi/s), or 5,328 mph (8,575 km/h); be lost to space either by solar radiation pressure or, if the gases are ionized, by being swept away in the solar wind's magnetic field.
The moon is the namesake of ... as it is light enough to escape Europa's surface gravity. ... Since Europa's magnetic field rotates faster than its orbital velocity ...
The Moon's mass is 1 ⁄ 81 of Earth's, [72] being the second densest among the planetary moons, and having the second highest surface gravity, after Io, at 0.1654 g and an escape velocity of 2.38 km/s (8 600 km/h; 5 300 mph).
One classical thermal escape mechanism is Jeans escape, [1] named after British astronomer Sir James Jeans, who first described this process of atmospheric loss. [2] In a quantity of gas, the average velocity of any one molecule is measured by the gas's temperature, but the velocities of individual molecules change as they collide with one another, gaining and losing kinetic energy.
Escape velocity from Deimos is 5.6 m/s. [6] This velocity could theoretically be achieved by a human performing a vertical jump. [ 27 ] [ 28 ] The apparent magnitude of Deimos is 12.45.
Failed to perform mid-course correction, [24] remained in high Earth orbit until given escape velocity by orbital perturbation. [25] 24: Ranger 6 (P-54) Ranger 6: 30 January 1964: Atlas LV-3 Agena-B: NASA: Impactor: Spacecraft failure Impacted on 2 February 1964, failed to return images due to power system failure. [26] [27] 25: Luna E-6 No.6 ...
Orbital trajectories are either circles or ellipses; the parabolic trajectory represents first escape of the vehicle from the central body's gravitational field. Hyperbolic trajectories are escape trajectories with excess velocity, and will be covered under Interplanetary flight below. Elliptical orbits are characterized by three elements. [9]