Could it one day be possible to modify the gravity of Mars?

Question

I realize that at present moment, this type of operation may not be speculated as being feasible. There is a great deal of hypothesizing going on that is concerned with the complete recreation of Mars' environment (Terraforming) into an earth-like environmeny, which seems possible. However, the gravity which is currently present on Mars is about 1/3 of the gravity which exists on earth. People who would one day migrate to this terraforming Mars would find themselves in an environment similar to ours, but the gravity would be radically different and they may experience bone/muscle loss. So... any ideas on how to bolster or otherwise modify a planet's gravity field, to make it stronger until it is level with Earth's?

Answer 1

you'd have to inject energy or mass into the core of the planet.

Thats exactly what the planet needs though, not because it really needs more gravity, but its core is not molten.

Its needs more energy to get hotter to be able to flow the metled metals much faster than what they are.

That would creat a stronger magnetic field. Mars needs to beef up its mag field in order to contain an atmosphere.

so more mass, more energy = more gravity, more mag field

Answer 2

There are 3 ways you could increase the gravity of Mars:

1. Add enough mass to it - you would need to add twice its current mass, and that could be difficult without doing a lot of damage to the planet. We could move Ceres and Vesta and a few hundred asteroids to Mars, and let them crash. Of coures, that would ruin any terraforming you had done, and probably make the planet too hot from the heat of collision for several thousand years.

2. Develop an artifical gravity generator - that could take some time, since its not theoretically possible to do with anything less than the mass of a planet. However, the right mass black hole maintained in a magnetic bottle would work but there is the creation of the black hole, the development of a magnetic container that would work, and the whole logistics of making sure the power never fails.

3. Create a localized gravity generator that would be under the human habitation region. That would mean that humans wouldn't be able to explore the planet without leaving the 1-G region.

Another alternative would be to learn to adapt. One third gravity would reduce the stress on the heart and lungs, would reduce fractures, spinal compression, and other gravity-related conditions.
Bone loss could be prevented with appropriate supplements (calcium/magnesium/vitamin D) and muscle loss could be prevented by mandatory exercise in a 1-G field. A gymnasium or other recreation centre would be fairly easy to supplement the gravity (assuming a gravity generator was invented).

Answer 3

Short of injecting massive quantities of heavy material into the substructure of the planet, which would be very difficult and costly to do due to the problem of bringing an extra-Marsestial object to the surface of the planet without letting it free-fall from orbit and causing a cataclismic explosion, the only thing that I can think of would be to slow down its speed of rotation. Less centrifugal force counteracting the gravity would make gravity's effects more noticeable. By how much, I don't know, especially not knowing the speed of Mars's rotation. This would cause problems with heat an cold, for sure, but

Maybe the idea of terraforming would be better suited to Venus, if we could find a way to resolve the greenhouse gas issues the planet has, it might be an ok choice.

Answer 4

technically its possible. but the only way to increase gravity is to increase mass. someone above me was talking about a gravity generator...well um ud have to add mass to increase gravity, thats really the only way.

so technically anytime anything lands on the planet its gravity is increased. but to increase gravity to make it equal earths your talking tripling its mass. thats not really feasible.

and muscle loss or bone density loss wouldn't bt. e a problem. that happens because you no longer need to be that strong or or have that strong of bones, everything would be 1/3 the weight. so thats not really a problem. the only problem would be adjusting to the environment. how you walk, how you would suddenly be 3 times stronger than you were on earth for the first few weeks. and how to build stuff. our designs are based on earths gravity, it may not be as simple as reducing everything to a third.

and there are many other problems that are far greater. that atmosphere is about 100 times less dense then ours with nearly no oxygen, i dont see how we could oxygenate an entire planet and add an entire atmosphere. also the radiation is insane on mars. it doesnt have a magnetic field so nothing keeps out the solar radiation.

its also alot colder. the SOIL can get to about 81 F on the hottest days. and thats just the soil, with nearly no atmosphere the temp would lower extremely fast the farther away you got. the temperature can get down to in the -200 degrees F.

also theres no liquid water, so we have to get past that.

and out of all that it is the best chance we have.

mercury has no atmosphere and is scorching hot. venus is even hotter and has a massive atmosphere that would crush a person. jupiter, saturn, uranus and neptune are all gas. and pluto is too cold.

so its either mars or a moon (titan or europa)

Answer 5

Artificial gravity would be the holy grail in spacetravel. With the ability to artificially manipulate gravitational fields would have unlimited applications. You could make a craft gravitationally "invisible" and therefore massless. And travel at the speed of light. Or go into space from earth by jumping... And it would be possible to terraform Mars.

Mars gravity is currently too tiny to hold onto a significant atmosphere. Terefore it is not possible to make Mars livable. Unless to can artificially increase its gravity. Imagine turning that device on. You set it to "0.9G". And suddenly it will have 90% of earths gravity. It would break through the surface and begin plowing itself into Mars. Actually it will be Mars that is falling into the device but from our view it will just sink in. Eventually it will reach the core and there it will pull on all parts of Mars increasing its average density. Volcanoes would erupt and gasses would spew into the atmosphere. But unlike in Mars distant past those gases don´t just vent off into space. They remain...

Venus would be an easier place to terraform by comparison. The only thing you need to do to get rid of just about all that CO2 in its atmosphere is to mimic the process that happened on earth long ago. Because earths atmosphere was pretty much identical to Venus back then. Earth was able to get cool enough for water to condense while Venus has never been that cold. Cool Venus down, by blocking sunlight, and water will condense. And then it will catalytically become solid carbonate rock. Just like on earth.

Answer 6

Anything is possible. We may one day have the technology to somehow bend a region of space to simulate gravity, but it would probably be a relatively small area (such as a building) and not the entire planet.

The only other option you would have is to transfer massive material onto or into Mars to increase its gravitational field, and that would be very labor intensive indeed, if even possible.

Answer 7

Surface Gravity on Mars The surface gravity on a planet can be determined from Newton 's Law of Universal Gravitation: F = G m1m2 / R2 This says that a planet of mass m1 and radius R will exert a force on an object (you) of mass m2 F = G m1m2 / R2 So we can relate the force on the surface of Mars to the force on the surface of the Earth. It will change like: mMars / R2Mars Since Mars has a mass that is 0.11 times the mass of the Earth and a radius that is 0.53 times the radius of the Earth we expect the surface gravity to be 0.11/(0.53)2 = 0.4 times the Earth's

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Answer 8

or colonize venus instead. we can more easily make a floating base with a balloon resistant to acid and filled with our planet's air than increase the gravity on mars. Eventually we could reduce the atmosphere on venus to make it more habitable and not so dense that the pressure would kill us if we were on the surface of the planet. We can live above the surface in the air in a balloon.

Answer 9

Gravity is dependent on mass. It would be necessary to add or subtract an incredible amount of mass to change the gravity. Any extra mass would have to come from somewhere else. Any less would have to go somewhere else. I can't think of anything that would justify such an undertaking.

Answer 10

The gravity difference at 0.38 G would be noticeable, but not as much as you might think. The only drawback would be that people travelling to Earth would need to do special exercises on the trip to strengthen up. And if the planet has a large, settled population, I don't think there'd be too much call for that.