In the future, would it ever be possible to restart Mars' core or create an artificial magnetic field?
I’ve actually answered a question similar to yours here: What are some proposed solutions to deal with Mars's weak magnetic field?So ill just show you my answer for that one here:Solutions to deal with Mars’ weak magnetic field can be split into two groups: solutions that give mars an artificial magnetosphere/ protection from the solar wind and those that involve restarting the planet’s magnetosphere by making the core molten again or increasing its spin rate.One idea to give Mars a magnetosphere is to surround it with a swarm of solar powered artificial satellites that generate their own magnetic fields. Their combined effect would be a type of artificial magnetic field that would deflect the solar wind, although only partially. Also navigating the air space near Mas would be a hazard as a result.Another idea involves simpler method that involves series of superconducting rings around the planet that would generate the magnetic field instead. Here’s a link: http://www.nifs.ac.jp/report/NIF...One solution that involves restarting Mars’ core involves drilling a hole (possible several) down to the core/ mantle region and passing a current through the rock. The resistance would generate heat and would cause the core to become molten again. There are huge engineering hurdles with this solution and a huge amount of electricity would be involved but theoretically it could be possible as the physics is sound.Another method involves simply smashing a large enough object into Mars which would generate a lot of heat which would help to heat the mantle and core of the planet. Horrifically impractical and would involve a huge amount of energy but once again the physics is sound.Also you could impact mars with fast moving asteroids/ comets to increase its spin rate. The outer core is still molten but it isn’t rotating at a speed to generate a sufficient magnetic field to deflect solar radiation. Mars’ current magnetic field strength is 40x weaker than Earth’s. An increase in Mars’ rotation would increase magnetic field strength. Although it is unknown if the resulting magnetic field would be strong enough to generate a magnetic field than can deflect the solar win to prevent atmosphere erosion.
What would it take to revive the Martian core?
Without a molten core the planet has not magnetosphere Without a magnetosphere the planet cannot retain a significant atmosphere, as it would be swept away by the solar wind. No atmosphere = No terraformed Mars So assuming a level of technology far beyond of current ability, what could theoretically restart the core. Some of my thoughts: The future civilization digs to the martian core using advanced machinery, and deposits thousands of tonnes of radioactive material such as uranium, which would release heat for billions of years as it decays. Or, the future civilization digs to the martian core and then uses a powerful array of mirrors and lasers in orbit to heat the core. Or, the future civilization slams millions of huge rocks from the nearby meteor belt into the planet at high speeds; effectively transferring a massive amount of kinetic energy to the planet. The planet would become molten and perhaps once it has settled it would once again have a molten core. Also, it might increase Mars' mass enough to achieve 1G of gravity; a distinct advantage for future settlers. Would any of these work, and what are some other ideas
Is there a way to use/reuse its radiation as energy to re-liquify Mars' core, and naturally help the planet reproduce its magnetosphere for terraforming?
There might be. Science fiction here. China syndrome where radioactive material goes into a meltdown. The amount of radioactive material you would need would be a bunch or maybe not. Once the radioactive material reached the core of Mars perhaps it would simply become a fusion reactor. Like I said, Science fiction. Not sure how you would restart the heart of a planet once it has gone cold. Still even then you are a long way from reviving the planet. Most of the asmosphere of Mars has seeped off into space. More science fiction coming. But with a couple of really big comets you might get some of that back by simply dropping them on the surface of Mars, if you are going to do this, do it before you start putting people on Mars because—-Well it’s gonna be messy when those big ass comets hit the surface of mars. But if they are big enough by the way we are talking really big comets. And a lot of them. especially if you are wanting to build up an atmosphere. So now you have the core cooking and the mantle is starting to melt. The atmosphere of the planet is in an uproar of water vapor and dust. As the atmosphere begins to build so does the barometric pressure. The temperatures begin to rise as the atmosphere becomes thick enough to conduct heat. Night time temperatures begin to rise going from -200 degrees to -30 day time temperatures are starting to rise as well. Still you have yourself a bit of a nuclear winter because of all of those comets you slammed into the surface and a lot of the sunshine is being reflected back into space. Still the temperatures are rising not above freezing but they are going up. As the dust settels the sun begins to warm the atmosphere more, and more. The water from the comets is beggining to melt. CO2 that is trapped in the soil of Mars is also beggining to melt and rise up into the atmosphere and this is causing the temperature to climb. Clouds begin to form, snows begin to fall on the north and south poles, At the equator water begins to flow freely, lakes and oceans that have been dry for ———- Naw that would never happen.
Why is Mars considered a dead planet to scientists?
A good question. The answer is such like that;They discovered frozen poles, but of dry CO2 not water.They discovered atmosphere with methane but no gases such as oxygen, nitrogen, inert gas in much proportion.They discovered rivers like ways but with no water flowing.They discovered ironic soil but not nutritious or fertile soil.This are some facts, that force us to think that did the life existed on Mars or not? When they think about the similarities between Earth and Mars, and compare them. The Earth looks like a living and healthy planet and Mars looks like a dead planet.So scientists considered Mars as a dead planet.
If it's possible, how soon can we terraform Mars realistically?
If you mean terraform Mars so that you could walk around safely on the surface without a spacesuit or oxygen mask, my opinion would be, it would take at least many thousands of years.The atmosphere of Mars is extremely thin, about 1/100 the density of Earth’s and is predominately Carbon Dioxide. To give Mars a warm breathable atmosphere would be like building it from scratch and having to extract much of the existing CO2. It would require adding an upper atmosphere of lightweight greenhouse gas to gather heat and block excess ultraviolet radiation.This would be the biggest human undertaking to date, and without some huge advances in technology, might not even be possible.
What is the real probability that humans will travel to Mars in the next twenty years or more?
Hardly, it could be achieved sometimes before the great window 2035.We have the competition and the cooperation, we need still coexistence.……………………………I do not promise. I pledge. Class makes difference: mundane-divine coexistence!As a presumed divine entity in our horizontal divine experience I work on it!I have pre-arranged 20 projects and Mars is the symbol for our space expansion.Latest I arrived to, is "gentle touch" of probes to bring asteroids down to Venus.They might cause moving of the planets Venus and Earth to more outer orbits.Both of them need global cooling. The Mars needs global warming and massing.I see lot of wires to ignite the core and revive magnetism, extrinsic and intrinsic!Mars requires a lot of extensive and intensive works. Ten robots to plant one tree!The divine spaceship I see as a cylinder with fixed hull shields and a rotating one!The propulsion with internal production of energy at small fuel consumption needs.