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- https://phys.libretexts.org/Courses/Prince_Georges_Community_College/General_Physics_I%3A_Classical_Mechanics/58%3A_Astrodynamics/58.05%3A_Gravity_Assist_ManeuversThe velocity of Jupiter in its orbit around the Sun (or a significant portion of it) is added to velocity vector of the spacecraft, as shown in the two vector diagrams. This was used to advantage duri...The velocity of Jupiter in its orbit around the Sun (or a significant portion of it) is added to velocity vector of the spacecraft, as shown in the two vector diagrams. This was used to advantage during the Apollo missions to the Moon, when this type of gravity assist maneuver with the Moon was used to reduce the amount of fuel needed to place the spacecraft into lunar orbit (Fig. \PageIndex3).
- https://phys.libretexts.org/Courses/Prince_Georges_Community_College/General_Physics_I%3A_Classical_Mechanics/57%3A__Celestial_Mechanics/57.04%3A_Orbital_ElementsThis requires three angles: (1) the inclination i of the orbit with respect to the reference plane; (2) the longitude of the ascending node Ω, which is the angle between the vernal equino...This requires three angles: (1) the inclination i of the orbit with respect to the reference plane; (2) the longitude of the ascending node Ω, which is the angle between the vernal equinox and the ascending node, measured in the reference plane; and (3) the argument of pericenter ω, which is the angle between the ascending node and the orbit pericenter, measured in the plane of the orbit.
- https://phys.libretexts.org/Courses/Prince_Georges_Community_College/General_Physics_I%3A_Classical_Mechanics/07%3A_Density/7.03%3A_Density_TriviaThe least dense planet is Saturn, with a density of 0.687 g/cm 3 . Saturn is the only planet in the Solar System that would float on water (given a large enough ocean). If the star is large enough, gr...The least dense planet is Saturn, with a density of 0.687 g/cm 3 . Saturn is the only planet in the Solar System that would float on water (given a large enough ocean). If the star is large enough, gravity can be strong enough to push the electrons of the atoms into the nucleus, forming a “neutron star”, which is essentially a giant ball of neutrons.
