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  2. Giant-impact hypothesis - Wikipedia

    en.wikipedia.org/wiki/Giant-impact_hypothesis

    Artist's depiction of a collision between two planetary bodies. Such an impact between Earth and a Mars-sized object likely formed the Moon.. The giant-impact hypothesis, sometimes called the Theia Impact, is an astrogeology hypothesis for the formation of the Moon first proposed in 1946 by Canadian geologist Reginald Daly.

  3. Theia (planet) - Wikipedia

    en.wikipedia.org/wiki/Theia_(planet)

    Animation of collision between Earth (blue) and Theia (black), forming the Moon (red and gray). Bodies are not to scale. According to the giant impact hypothesis, Theia orbited the Sun, nearly along the orbit of the proto-Earth, by staying close to one or the other of the Sun-Earth system's two more stable Lagrangian points (i.e., either L 4 or ...

  4. N-body simulation - Wikipedia

    en.wikipedia.org/wiki/N-body_simulation

    The path of a satellite closely orbiting the Earth can be accurately modeled starting from the 2-body elliptical orbit around the center of the Earth, and adding small corrections due to the oblateness of the Earth, gravitational attraction of the Sun and Moon, atmospheric drag, etc. It is possible to find a frozen orbit without calculating the ...

  5. Supercomputer simulation re-enacts the birth of the Moon - AOL

    www.aol.com/supercomputer-simulation-enacts...

    The formation of the Moon billions of years ago is cloaked in mystery. Most astronomers believe the young Earth, still cooling off from its formation, was struck by a mars-sized body called Theia ...

  6. Orbit modeling - Wikipedia

    en.wikipedia.org/wiki/Orbit_modeling

    Orbit modeling is the process of creating mathematical models to simulate motion of a massive body as it moves in orbit around another massive body due to gravity.Other forces such as gravitational attraction from tertiary bodies, air resistance, solar pressure, or thrust from a propulsion system are typically modeled as secondary effects.

  7. Reduced Gravity Walking Simulator - Wikipedia

    en.wikipedia.org/wiki/Reduced_Gravity_Walking...

    The Reduced Gravity Walking Simulator, or Lunar Landing Walking Simulator, was a facility developed by NASA in the early 1960s to study human locomotion under simulated lunar gravity conditions. Located at NASA's Langley Research Center in Virginia, it was designed to prepare astronauts for the Moon landing during the Apollo program .

  8. Tidal locking - Wikipedia

    en.wikipedia.org/wiki/Tidal_locking

    This is an artificial animation of one lunar orbit; in reality, the visible hemisphere would go through phases of dark and light as the Moon rotates with respect to the Sun. Earth's Moon's rotation and orbital periods are tidally locked with each other, so no matter when the Moon is observed from Earth, the same hemisphere of the Moon is always ...

  9. Orbiter (simulator) - Wikipedia

    en.wikipedia.org/wiki/Orbiter_(simulator)

    Orbiter was developed as a simulator, [14] with accurately modeled planetary motion, gravitation effects (including non-spherical gravity), free space, atmospheric flight and orbital decay. [15] [16] The position of the planets in the solar system is calculated by the VSOP87 solution, while the Earth-Moon system is simulated by the ELP2000 ...