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Sketch of a circumlunar free return trajectory (not to scale), plotted on the rotating reference frame rotating with the moon. (Moon's motion only shown for clarity) In orbital mechanics, a free-return trajectory is a trajectory of a spacecraft traveling away from a primary body (for example, the Earth) where gravity due to a secondary body (for example, the Moon) causes the spacecraft to ...
Planet Nine is a hypothetical ninth planet in the outer region of the Solar System. [4] [2] Its gravitational effects could explain the peculiar clustering of orbits for a group of extreme trans-Neptunian objects (ETNOs), bodies beyond Neptune that orbit the Sun at distances averaging more than 250 times that of the Earth i.e. over 250 astronomical units (AU).
NASA Habitable Mobility Platform based on the past Constellation Space Exploration Vehicle. The Pressurized Rover (PR) is a large, pressurized module used to enable crewed operation across large distances and live for multiple days. NASA had developed multiple pressurized rovers including what was formerly called the Space Exploration Vehicle (SEV
The accuracy of the initial trajectory enabled delay of the planned mid-course correction from 22 to 23 March when the maneuver was initiated at 12:03 UT. After orientation, a 31-second rocket burn at 12:30 UT, and reorientation, the maneuver was completed at 13:30 UT. [3] Ranger 9 reached the Moon on 24 March 1965. At 13:31 UTC, a terminal ...
FreeFlyer has been used to support many spacecraft missions, for mission planning analysis, operational analysis, or both. Specific mission examples include the International Space Station (ISS), [7] the JSpOC Mission System, [8] the Earth Observing System, [9] [10] Solar Dynamics Observatory (SDO), [11] and Magnetospheric Multiscale Mission (MMS).
Players of the video game Kerbal Space Program often employ aerocapture, particularly when exploring the satellites of Jool (a gas giant that serves as the game's Jupiter analogue). In the television serial Stargate Universe, the ship Destiny's autopilot employs aerocapture within the atmosphere of a gas giant at the edge of a star system. This ...
The main mission of this project is to learn from and practice doing science field activities, including searching for evidence of life, in an extreme environment with reduced gravity conditions. [9] The advantage of the lake is that there is no swell and a calm water what makes simulation safer and can be used util 65 meters deep.
NASA considered the flight EVA to be a total success, and Aldrin again returned to McDonogh to perform a post-mission evaluation of the EVA. The post-mission evaluation verified the value of using neutral buoyancy simulation training before attempting all of the EVA tasks while wearing a pressure suit and working in the hostile environment of ...