Sentences with phrase «gravity of a planetary body»
Not exact matches
The International Astronomical Union defines «planet» as a celestial body that, within the Solar System that is in orbit around the Sun; has sufficient mass for its self - gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape; and has cleared the neighbourhood around its orbit; or within another system, it is in orbit around a star or stellar remnants; has a mass below the limiting mass for thermonuclear fusion of deuterium; and is above the minimum mass / size requirement for planetary status in the Solar System.
https://www.sciencedaily.com/
ARM will demonstrate advanced, high - power, high - throughput solar electric propulsion; advanced autonomous high - speed proximity operations at a low - gravity planetary body; controlled touchdown and liftoff with a multi-ton mass from a low - gravity planetary body, astronaut spacewalk activities for sample selection, extraction, containment and return; and mission operations of integrated robotic and crewed vehicle stack — all key components of future in - space operations for human missions to Mars.