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  2. Gravity of Mars - Wikipedia

    en.wikipedia.org/wiki/Gravity_of_Mars

    The gravity of Mars is a natural phenomenon, due to the law of gravity, or gravitation, by which all things with mass around the planet Mars are brought towards it. It is weaker than Earth's gravity due to the planet's smaller mass. The average gravitational acceleration on Mars is 3.72076 m/s 2 (about 38% of the gravity of Earth) and it varies ...

  3. Mass versus weight - Wikipedia

    en.wikipedia.org/wiki/Mass_versus_weight

    The mass of an object is a measure of the object’s inertial property, or the amount of matter it contains. The weight of an object is a measure of the force exerted on the object by gravity, or the force needed to support it. The pull of gravity on the earth gives an object a downward acceleration of about 9.8 m/s 2.

  4. Mars - Wikipedia

    en.wikipedia.org/wiki/Mars

    Mars is the fourth planet from the Sun. The surface of Mars is orange-red because it is covered in iron (III) oxide dust, giving it the nickname " the Red Planet ". [22][23] Mars is among the brightest objects in Earth's sky, and its high-contrast albedo features have made it a common subject for telescope viewing.

  5. Delta-v budget - Wikipedia

    en.wikipedia.org/wiki/Delta-v_budget

    Delta- v in feet per second, and fuel requirements for a typical Apollo Lunar Landing mission. In astrodynamics and aerospace, a delta-v budget is an estimate of the total change in velocity (delta- v) required for a space mission. It is calculated as the sum of the delta-v required to perform each propulsive maneuver needed during the mission.

  6. Surface gravity - Wikipedia

    en.wikipedia.org/wiki/Surface_gravity

    The surface gravity of Mars is therefore approximately = times that of Earth. Without using the Earth as a reference body, the surface gravity may also be calculated directly from Newton's law of universal gravitation , which gives the formula g = G M r 2 {\displaystyle g={\frac {GM}{r^{2}}}} where M is the mass of the object, r is its radius ...

  7. Atmosphere of Mars - Wikipedia

    en.wikipedia.org/wiki/Atmosphere_of_Mars

    0.03% (variable) The atmosphere of Mars is the layer of gases surrounding Mars. It is primarily composed of carbon dioxide (95%), molecular nitrogen (2.85%), and argon (2%). [3] It also contains trace levels of water vapor, oxygen, carbon monoxide, hydrogen, and noble gases. [3][5][2] The atmosphere of Mars is much thinner and colder than Earth ...

  8. Perseverance (rover) - Wikipedia

    en.wikipedia.org/wiki/Perseverance_(rover)

    Perseverance, nicknamed Percy, [ 2 ] is a car -sized Mars rover designed to explore the Jezero crater on Mars as part of NASA 's Mars 2020 mission. It was manufactured by the Jet Propulsion Laboratory and launched on July 30, 2020, at 11:50 UTC. [ 3 ] Confirmation that the rover successfully landed on Mars was received on February 18, 2021, at ...

  9. Sky crane (landing system) - Wikipedia

    en.wikipedia.org/wiki/Sky_crane_(landing_system)

    Instead, a landing system that combines parachutes and sky crane was developed. Sky crane is a platform with eight engines that lowers the rover on three nylon tethers until the soft landing. EDL begins when the spacecraft reaches the top of the Martian atmosphere. Engineers have referred to the time it takes to land on Mars as the "seven ...