<html> <p><img src="https://i.imgsafe.org/9926dbed8f.jpg" width="800" height="500"/></p> <p>The whole world is pretty excited right now due to the efforts of several different agencies that are focused on carrying out manned missions to Mars and then to try and create a new home for ourselves there. </p> <p>As humans, survival is our basic instinct and there are many threats to our existence that we are already well aware of. Some like climate change, global warming, nuclear warfare are man made threats while asteroid impacts, reversal of Earth’s magnetic poles, eruption of a super volcano and some others are natural threats.</p> <p>We must ensure the survival of the human race for as long as possible or else all our advancements throughout history will have been for nothing. That is why, we as a race, are looking seriously at the colonisation of Mars.</p> <p>Plans range from early 2030s to early 2040s to establish at least some sort of permanent human presence on the red planet but it will be quite difficult as it is literally a dead planet. One of the many challenges for any second human civilisation would be an absence of a magnetic field protecting the planet. </p> <h1>Magnetic Field</h1> <p><img src="https://i.imgsafe.org/9927011c62.png" width="500" height="515"/></p> <p>You must already know that the Earth has a magnetic field surrounding it thanks to the molten core of our planet. This magnetic field is very important for our survival as it protects us from the radiation of the sun. It also protects us from solar winds without which the ozone layer would get depleted. </p> <p>There is no such magnetic field surrounding Mars. It did have one a long time ago but around 4.2 billion years ago, this magnetic field vanished. This was also the reason behind Mars’ atmosphere slowly getting lost to space, in turn creating a dead planet.</p> <p>If we want to colonise Mars and create a self sustaining population there, we have to find some way to create a magnetic field around it because it is not sure if that will ever happen on its own and we can’t wait for it even if it did. </p> <p>For any civilisation to exist, there has to be a liveable atmosphere and there has to be a shield around that atmosphere to protect forever. And NASA may be trying to do just that. </p> <h1>NASA’s Ambitious Plan</h1> <p><img src="https://i.imgsafe.org/99271921f4.jpg" width="580" height="429"/></p> <p><em>Image Credits: NASA/Jim Green</em></p> <p>The plan that NASA has to deal with this problem is not only ambitious but rather sci-fi like. It aims to protect Mars and its future inhabitants using an artificial magnetic field protecting it at all times. </p> <p>It sounds something that is really difficult to believe but when Dr. Jim Green, the Director of NASA’s Planetary Science Division says it’s possible, then I think it has some weight behind it. </p> <p>The idea is that in the future, an inflatable structure could be placed at a specific distance away from the planet (in this case the Mars L1 Lagrange Point). This inflatable structure could then generate a magnetic dipole field shielding the planet. You can see how it works in the photo above. </p> <p>The NASA researchers believe that creating a magnetic field around Mars would lead to an increase in the temperature Mars (possibly melting the polar ice caps to make liquid water), start to thicken the Martian atmosphere.</p> <p>All these are necessary for the sustenance of a Martial civilisation as they would need to grow plants and trees to meet their various needs along with filling the Martian atmosphere with oxygen. </p> <p><br></p> <p>Space Exploration keeps getting more exciting by the day!</p> </html>
| author | sauravrungta |
|---|---|
| permlink | can-we-make-an-artificial-magnetic-shield-around-mars |
| category | space |
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I'm very simple. I just want a magnetic field around me so I don't get rain on.
| author | ace108 |
|---|---|
| permlink | re-sauravrungta-can-we-make-an-artificial-magnetic-shield-around-mars-20170316t012011361z |
| category | space |
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LOL, Rain would still fall on you if you had a magnetic field, or so I think. :P
| author | sauravrungta |
|---|---|
| permlink | re-ace108-re-sauravrungta-can-we-make-an-artificial-magnetic-shield-around-mars-20170316t054108075z |
| category | space |
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Very fun idea. Let's think about this: The L1 point is unstable. This means that if you put a spacecraft there and it starts to drift away, it will not come back. So you don't have to expend much energy to keep a spacecraft at the L1 point, but you do have to be active about it. It's just like balancing a stick on your hand. It's not hard and once you have it balanced just right you don't have to move your hand around much to keep it there. But if you stop actively balancing it, it will fall over. So think about the solar wind shield: Its purpose is to deflect charged particles coming from the sun so they don't hit Mars and strip away its atmosphere (and give its residents cancer). Can you do this without having the solar wind exert huge forces on your shield? Maybe? Certainly if the shield were a literal physical shield, the forces generated by radiation pressure would be enormous. You'd have to be firing some kind of propulsion device towards the sun at all times to keep from being blown away from the L1 point. But would the magnetic shield work the same? All it has to do is deflect the particles to the side, right? It doesn't have to bounce them back towards the sun. So at face value, it's not obvious to me that conservation of momentum would kill you... That's all I've got. Thanks!
| author | biophil |
|---|---|
| permlink | re-sauravrungta-can-we-make-an-artificial-magnetic-shield-around-mars-20170316t023332251z |
| category | space |
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I had the same concerns as well. It would be a really inefficient system and one that couldn't last long. The only thing that made me believe that it might be possible is that this might happen 10 years or 20 years down the road (which is a huge time in technological terms). I might be wrong and this may remain just an idea. But I think it's nice that NASA is exploring lots of ideas about keeping the Mars mission afloat. Thanks for reading and your awesome comment :)
| author | sauravrungta |
|---|---|
| permlink | re-biophil-re-sauravrungta-can-we-make-an-artificial-magnetic-shield-around-mars-20170316t054034038z |
| category | space |
| json_metadata | {"tags":["space"],"app":"steemit/0.1"} |
| created | 2017-03-16 05:40:33 |
| last_update | 2017-03-16 05:40:33 |
| depth | 2 |
| children | 0 |
| last_payout | 2017-04-15 21:35:48 |
| cashout_time | 1969-12-31 23:59:59 |
| total_payout_value | 0.022 HBD |
| curator_payout_value | 0.007 HBD |
| pending_payout_value | 0.000 HBD |
| promoted | 0.000 HBD |
| body_length | 472 |
| author_reputation | 681,518,124,448,054 |
| root_title | "Can We Make An Artificial Magnetic Shield Around Mars?" |
| beneficiaries | [] |
| max_accepted_payout | 1,000,000.000 HBD |
| percent_hbd | 10,000 |
| post_id | 2,734,724 |
| net_rshares | 121,596,279,292 |
| author_curate_reward | "" |
| voter | weight | wgt% | rshares | pct | time |
|---|---|---|---|---|---|
| biophil | 0 | 64,008,716,718 | 100% | ||
| rouketas | 0 | 58,837,720 | 100% | ||
| goldsteem | 0 | 57,528,724,854 | 100% |
I didn't believe this was still active, but it is actually. See [here](https://mgs-mager.gsfc.nasa.gov/), the last update being from January 2017.
| author | lemouth |
|---|---|
| permlink | re-sauravrungta-can-we-make-an-artificial-magnetic-shield-around-mars-20170315t202828339z |
| category | space |
| json_metadata | {"tags":["space"],"links":["https://mgs-mager.gsfc.nasa.gov/"],"app":"steemit/0.1"} |
| created | 2017-03-15 20:28:27 |
| last_update | 2017-03-15 20:28:27 |
| depth | 1 |
| children | 1 |
| last_payout | 2017-04-15 21:35:48 |
| cashout_time | 1969-12-31 23:59:59 |
| total_payout_value | 0.033 HBD |
| curator_payout_value | 0.010 HBD |
| pending_payout_value | 0.000 HBD |
| promoted | 0.000 HBD |
| body_length | 146 |
| author_reputation | 338,011,164,701,274 |
| root_title | "Can We Make An Artificial Magnetic Shield Around Mars?" |
| beneficiaries | [] |
| max_accepted_payout | 1,000,000.000 HBD |
| percent_hbd | 10,000 |
| post_id | 2,731,271 |
| net_rshares | 181,110,780,395 |
| author_curate_reward | "" |
| voter | weight | wgt% | rshares | pct | time |
|---|---|---|---|---|---|
| sauravrungta | 0 | 166,456,838,639 | 100% | ||
| azfix | 0 | 14,653,941,756 | 100% |
Yeah, the idea seemed outlandish to me or something that was, as Trump would say, "Fake News...." But it is something that they are actually thinking about. As to it's viability, we will have to wait and see.
| author | sauravrungta |
|---|---|
| permlink | re-lemouth-re-sauravrungta-can-we-make-an-artificial-magnetic-shield-around-mars-20170316t054208653z |
| category | space |
| json_metadata | {"tags":["space"],"app":"steemit/0.1"} |
| created | 2017-03-16 05:42:09 |
| last_update | 2017-03-16 05:42:09 |
| depth | 2 |
| children | 0 |
| last_payout | 2017-04-15 21:35:48 |
| cashout_time | 1969-12-31 23:59:59 |
| total_payout_value | 0.000 HBD |
| curator_payout_value | 0.000 HBD |
| pending_payout_value | 0.000 HBD |
| promoted | 0.000 HBD |
| body_length | 208 |
| author_reputation | 681,518,124,448,054 |
| root_title | "Can We Make An Artificial Magnetic Shield Around Mars?" |
| beneficiaries | [] |
| max_accepted_payout | 1,000,000.000 HBD |
| percent_hbd | 10,000 |
| post_id | 2,734,729 |
| net_rshares | 0 |
Mars actually does have an extremely weak magnetic field (~40 times weaker than Earth’s) but only in the southern hemisphere.
| author | sargan26 |
|---|---|
| permlink | re-sauravrungta-can-we-make-an-artificial-magnetic-shield-around-mars-20170315t200035666z |
| category | space |
| json_metadata | {"tags":["space"],"app":"steemit/0.1"} |
| created | 2017-03-15 20:00:36 |
| last_update | 2017-03-15 20:00:36 |
| depth | 1 |
| children | 1 |
| last_payout | 2017-04-15 21:35:48 |
| cashout_time | 1969-12-31 23:59:59 |
| total_payout_value | 0.030 HBD |
| curator_payout_value | 0.010 HBD |
| pending_payout_value | 0.000 HBD |
| promoted | 0.000 HBD |
| body_length | 125 |
| author_reputation | 278,633,634,735 |
| root_title | "Can We Make An Artificial Magnetic Shield Around Mars?" |
| beneficiaries | [] |
| max_accepted_payout | 1,000,000.000 HBD |
| percent_hbd | 10,000 |
| post_id | 2,731,073 |
| net_rshares | 166,456,838,639 |
| author_curate_reward | "" |
| voter | weight | wgt% | rshares | pct | time |
|---|---|---|---|---|---|
| sauravrungta | 0 | 166,456,838,639 | 100% |
Oh, I didn't know that. Thanks for pointing that out :)
| author | sauravrungta |
|---|---|
| permlink | re-sargan26-re-sauravrungta-can-we-make-an-artificial-magnetic-shield-around-mars-20170316t054757102z |
| category | space |
| json_metadata | {"tags":["space"],"app":"steemit/0.1"} |
| created | 2017-03-16 05:47:57 |
| last_update | 2017-03-16 05:47:57 |
| depth | 2 |
| children | 0 |
| last_payout | 2017-04-15 21:35:48 |
| cashout_time | 1969-12-31 23:59:59 |
| total_payout_value | 0.000 HBD |
| curator_payout_value | 0.000 HBD |
| pending_payout_value | 0.000 HBD |
| promoted | 0.000 HBD |
| body_length | 55 |
| author_reputation | 681,518,124,448,054 |
| root_title | "Can We Make An Artificial Magnetic Shield Around Mars?" |
| beneficiaries | [] |
| max_accepted_payout | 1,000,000.000 HBD |
| percent_hbd | 10,000 |
| post_id | 2,734,746 |
| net_rshares | 0 |
hiveblocks