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NASA proposes artificial magnetic field to make Mars a second home

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  NASA proposes artificial magnetic field to make Mars a second home Yousuf Khan <bbbl67@spammenot.yahoo.com> - 2017-03-08 07:42 -0500
    Re: NASA proposes artificial magnetic field to make Mars a second home S Ergio <invlid@invalid.com> - 2017-03-08 08:16 -0600
      Re: NASA proposes artificial magnetic field to make Mars a second home dlzc <dlzc1@cox.net> - 2017-03-08 06:21 -0800
      Re: NASA proposes artificial magnetic field to make Mars a second home Yousuf Khan <bbbl67@spammenot.yahoo.com> - 2017-03-08 11:40 -0500
        Re: NASA proposes artificial magnetic field to make Mars a second home S Ergio <invlid@invalid.com> - 2017-03-08 11:51 -0600
          Re: NASA proposes artificial magnetic field to make Mars a second home Yousuf Khan <bbbl67@spammenot.yahoo.com> - 2017-03-08 22:44 -0500
            Re: NASA proposes artificial magnetic field to make Mars a second  home The Starmaker <starmaker@ix.netcom.com> - 2017-03-08 23:36 -0800
              Re: NASA proposes artificial magnetic field to make Mars a second  home The Starmaker <starmaker@ix.netcom.com> - 2017-03-09 10:07 -0800
            Re: NASA proposes artificial magnetic field to make Mars a second home S Ergio <invlid@invalid.com> - 2017-03-09 08:47 -0600
              Re: NASA proposes artificial magnetic field to make Mars a second home "Rodney Pont" <mlist4@infohit.me.uk> - 2017-03-09 16:21 +0000
                Re: NASA proposes artificial magnetic field to make Mars a second home S Ergio <invlid@invalid.com> - 2017-03-09 10:50 -0600
                  Re: NASA proposes artificial magnetic field to make Mars a second home "Rodney Pont" <mlist4@infohit.me.uk> - 2017-03-09 19:04 +0000
                    Re: NASA proposes artificial magnetic field to make Mars a second home S Ergio <invlid@invalid.com> - 2017-03-09 15:31 -0600
                      Re: NASA proposes artificial magnetic field to make Mars a second home "Rodney Pont" <mlist4@infohit.me.uk> - 2017-03-10 05:43 +0000
                      Re: NASA proposes artificial magnetic field to make Mars a second home Yousuf Khan <bbbl67@spammenot.yahoo.com> - 2017-03-10 01:42 -0500
              Re: NASA proposes artificial magnetic field to make Mars a second home Yousuf Khan <bbbl67@spammenot.yahoo.com> - 2017-03-09 21:37 -0500
                Re: NASA proposes artificial magnetic field to make Mars a second home "Rodney Pont" <mlist4@infohit.me.uk> - 2017-03-10 05:38 +0000
                  Re: NASA proposes artificial magnetic field to make Mars a second home Yousuf Khan <bbbl67@spammenot.yahoo.com> - 2017-03-10 01:51 -0500
                    Re: NASA proposes artificial magnetic field to make Mars a second home "Rodney Pont" <mlist4@infohit.me.uk> - 2017-03-10 07:21 +0000
                      Re: NASA proposes artificial magnetic field to make Mars a second home Yousuf Khan <bbbl67@spammenot.yahoo.com> - 2017-03-10 08:24 -0500
                        Re: NASA proposes artificial magnetic field to make Mars a second home dlzc <dlzc1@cox.net> - 2017-03-10 06:37 -0800
                          Re: NASA proposes artificial magnetic field to make Mars a second home Yousuf Khan <bbbl67@spammenot.yahoo.com> - 2017-03-11 15:58 -0500
                            Re: NASA proposes artificial magnetic field to make Mars a second home dlzc <dlzc1@cox.net> - 2017-03-11 18:09 -0800
                              Re: NASA proposes artificial magnetic field to make Mars a second home Yousuf Khan <bbbl67@spammenot.yahoo.com> - 2017-03-13 01:13 -0400
                                Re: NASA proposes artificial magnetic field to make Mars a second home dlzc <dlzc1@cox.net> - 2017-03-13 07:14 -0700
                                  Re: NASA proposes artificial magnetic field to make Mars a second home Yousuf Khan <bbbl67@spammenot.yahoo.com> - 2017-03-15 23:41 -0400
                                    Re: NASA proposes artificial magnetic field to make Mars a second home dlzc <dlzc1@cox.net> - 2017-03-16 07:25 -0700
                                      Re: NASA proposes artificial magnetic field to make Mars a second home Yousuf Khan <bbbl67@spammenot.yahoo.com> - 2017-03-18 04:10 -0400
                                        Re: NASA proposes artificial magnetic field to make Mars a second home dlzc <dlzc1@cox.net> - 2017-03-18 09:05 -0700
                                          Re: NASA proposes artificial magnetic field to make Mars a second home Yousuf Khan <bbbl67@spammenot.yahoo.com> - 2017-03-19 20:41 -0400
      Re: NASA proposes artificial magnetic field to make Mars a second home Dr J R Stockton <reply1700@merlyn.demon.co.uk.invalid> - 2017-03-11 21:54 +0000
        Re: NASA proposes artificial magnetic field to make Mars a second home Serg io <invalid@invalid.com> - 2017-03-12 11:52 -0500
    Re: NASA proposes artificial magnetic field to make Mars a second home The Starmaker <starmaker@ix.netcom.com> - 2017-03-08 10:38 -0800

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#59770

Dear Yousuf Khan:

On Friday, March 10, 2017 at 6:24:53 AM UTC-7, Yousuf Khan wrote:
...
> However, I wonder if a large enough magnetic
> ring can be used like an ion thruster, only
> using the solar wind particles, rather than
> Xenon? 

Where does it get its power from?  Won't be solar panels...

> Not only could they use the magnetic field
> to divert the solar winds away from the
> planet, they could also use it as thrust to
> keep the orbit stable at the L1 point.

... which is not where you really want this half-baked system.  The particles this "magnetic shield" is to protect you from, are not moving at c.  And Mars is still whipping around at a good clip.  The "wake" this system produces will fall behind Mars, not *around* Mars.  You'd need to "drive" the object a little forward of the stability point.

David A. Smith

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#59776

On 3/10/2017 9:37 AM, dlzc wrote:
> Dear Yousuf Khan:
>
> On Friday, March 10, 2017 at 6:24:53 AM UTC-7, Yousuf Khan wrote:
> ...
>> However, I wonder if a large enough magnetic
>> ring can be used like an ion thruster, only
>> using the solar wind particles, rather than
>> Xenon?
>
> Where does it get its power from?  Won't be solar panels...

And why not? Just scale up the number of solar panels to the required 
level to get to 1 or 2 Tesla.

>> Not only could they use the magnetic field
>> to divert the solar winds away from the
>> planet, they could also use it as thrust to
>> keep the orbit stable at the L1 point.
>
> ... which is not where you really want this half-baked system.  The particles this "magnetic shield" is to protect you from, are not moving at c.  And Mars is still whipping around at a good clip.  The "wake" this system produces will fall behind Mars, not *around* Mars.  You'd need to "drive" the object a little forward of the stability point.

The solar winds aren't travelling at c, they're only going between 300 - 
750 km/s.

https://en.wikipedia.org/wiki/Solar_wind

	Yousuf Khan

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#59778

Dear Yousuf Khan:

On Saturday, March 11, 2017 at 1:58:40 PM UTC-7, Yousuf Khan wrote:
> On 3/10/2017 9:37 AM, dlzc wrote:
...
> > Where does it get its power from?  Won't be solar panels...
> 
> And why not? Just scale up the number of solar panels to
> the required level to get to 1 or 2 Tesla.

Don't need intense, if you can get big.

> > ... which is not where you really want this
> > half-baked system.  The particles this "magnetic
> > shield" is to protect you from, are not moving
> > at c.  And Mars is still whipping around at a
> > good clip.  The "wake" this system produces will
> > fall behind Mars, not *around* Mars.  You'd need
> > to "drive" the object a little forward of the
> > stability point.
> 
> The solar winds aren't travelling at c, they're
> only going between 300 - 750 km/s.
> 
> https://en.wikipedia.org/wiki/Solar_wind

So the "shield" will have to be WAY forward.  About 43 minutes forward:
https://plus.google.com/+JonathanLangdale/posts/h4HBjVDkS74

David A. Smith

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#59784

On 3/11/2017 9:09 PM, dlzc wrote:
> Dear Yousuf Khan:
>
> On Saturday, March 11, 2017 at 1:58:40 PM UTC-7, Yousuf Khan wrote:
>> On 3/10/2017 9:37 AM, dlzc wrote:
> ...
>>> Where does it get its power from?  Won't be solar panels...
>>
>> And why not? Just scale up the number of solar panels to
>> the required level to get to 1 or 2 Tesla.
>
> Don't need intense, if you can get big.

So either way, i.e. intense or big, how does that preclude using solar 
panels?

>>> ... which is not where you really want this
>>> half-baked system.  The particles this "magnetic
>>> shield" is to protect you from, are not moving
>>> at c.  And Mars is still whipping around at a
>>> good clip.  The "wake" this system produces will
>>> fall behind Mars, not *around* Mars.  You'd need
>>> to "drive" the object a little forward of the
>>> stability point.
>>
>> The solar winds aren't travelling at c, they're
>> only going between 300 - 750 km/s.
>>
>> https://en.wikipedia.org/wiki/Solar_wind
>
> So the "shield" will have to be WAY forward.  About 43 minutes forward:
> https://plus.google.com/+JonathanLangdale/posts/h4HBjVDkS74

43 minutes is the distance of the L1 away from Mars as far as the local 
solar wind speed is considered. Or 3.5 light-seconds as far as the solar 
light is concerned.

	Yousuf Khan

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#59790

Dear Yousuf Khan:

On Sunday, March 12, 2017 at 10:13:05 PM UTC-7, Yousuf Khan wrote:
> On 3/11/2017 9:09 PM, dlzc wrote:
...
> > Dear Yousuf Khan:
> >
> > On Saturday, March 11, 2017 at 1:58:40 PM UTC-7, Yousuf Khan wrote:
> >> On 3/10/2017 9:37 AM, dlzc wrote:
> > ...
> >>> Where does it get its power from?  Won't be
> >>> solar panels...
> >>
> >> And why not? Just scale up the number of
> >> solar panels to the required level to get
> >> to 1 or 2 Tesla.
> >
> > Don't need intense, if you can get big.
> 
> So either way, i.e. intense or big, how does
> that preclude using solar panels?

Easier to do big, with lower light intensity, and fewer "expensive" materials.

> >>> ... which is not where you really want this
> >>> half-baked system.  The particles this "magnetic
> >>> shield" is to protect you from, are not moving
> >>> at c.  And Mars is still whipping around at a
> >>> good clip.  The "wake" this system produces will
> >>> fall behind Mars, not *around* Mars.  You'd need
> >>> to "drive" the object a little forward of the
> >>> stability point.
> >>
> >> The solar winds aren't travelling at c, they're
> >> only going between 300 - 750 km/s.
> >>
> >> https://en.wikipedia.org/wiki/Solar_wind
> >
> > So the "shield" will have to be WAY forward.
> > About 43 minutes forward:
> > https://plus.google.com/+JonathanLangdale/posts/h4HBjVDkS74
> 
> 43 minutes is the distance of the L1 away from
> Mars as far as the local solar wind speed is
> considered. Or 3.5 light-seconds as far as the
> solar light is concerned.

The magnetic field does not stop light, only charged particles.  So solar wind speed, is what needs to be figured in.

David A. Smith

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#59805

On 3/13/2017 10:14 AM, dlzc wrote:
> Dear Yousuf Khan:
>
> On Sunday, March 12, 2017 at 10:13:05 PM UTC-7, Yousuf Khan wrote:
>> So either way, i.e. intense or big, how does
>> that preclude using solar panels?
>
> Easier to do big, with lower light intensity, and fewer "expensive" materials.

So go big. They'll figure out the best way to approach it.

>>> So the "shield" will have to be WAY forward.
>>> About 43 minutes forward:
>>> https://plus.google.com/+JonathanLangdale/posts/h4HBjVDkS74
>>
>> 43 minutes is the distance of the L1 away from
>> Mars as far as the local solar wind speed is
>> considered. Or 3.5 light-seconds as far as the
>> solar light is concerned.
>
> The magnetic field does not stop light, only charged particles.  So solar wind speed, is what needs to be figured in.
>
> David A. Smith

The article you linked to is from 2011, and it's about a totally 
different issue. It's about an early warning system for solar winds, so 
putting a satellite at the L1 would encounter the solar wind 43 minutes 
before Mars itself does. But due to the higher speed of light, which 
gets to Mars in 3.5 seconds, you have 43 minutes - 3.5 seconds of early 
warning about it.

The issue here is not about early warning, but about redirecting the 
solar winds completely from Mars. So early warning really has no bearing 
on anything here, except that if the parameters of the magnetic shield 
need to be adjusted, you have about 7 seconds of turn around time to 
react from Mars.

	Yousuf Khan

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#59807

Dear Yousuf Khan:

On Wednesday, March 15, 2017 at 8:41:45 PM UTC-7, Yousuf Khan wrote:
> On 3/13/2017 10:14 AM, dlzc wrote:
> > On Sunday, March 12, 2017 at 10:13:05 PM UTC-7, Yousuf Khan wrote:
> >> So either way, i.e. intense or big, how does
> >> that preclude using solar panels?
> >
> > Easier to do big, with lower light intensity, and
> > fewer "expensive" materials.
> 
> So go big. They'll figure out the best way to
> approach it.

You have a lot of faith in "them".

> >>> So the "shield" will have to be WAY forward.
> >>> About 43 minutes forward:
> >>> https://plus.google.com/+JonathanLangdale/posts/h4HBjVDkS74
> >>
> >> 43 minutes is the distance of the L1 away from
> >> Mars as far as the local solar wind speed is
> >> considered. Or 3.5 light-seconds as far as the
> >> solar light is concerned.
> >
> > The magnetic field does not stop light, only
> > charged particles.  So solar wind speed, is
> > what needs to be figured in.
> 
> The article you linked to is from 2011, and
> it's about a totally different issue. It's about
> an early warning system for solar winds, so 
> putting a satellite at the L1 would encounter
> the solar wind 43 minutes before Mars itself
> does. But due to the higher speed of light,
> which gets to Mars in 3.5 seconds, you have
> 43 minutes - 3.5 seconds of early warning about
> it.
> 
> The issue here is not about early warning, but
> about redirecting the solar winds completely
> from Mars. So early warning really has no
> bearing on anything here, except that if the
> parameters of the magnetic shield need to be
> adjusted, you have about 7 seconds of turn
> around time to react from Mars.

The solar wind takes 43 minutes to reach the orbit of Mars.  So a "shadow" in solar wind created by an object at the L1 point, crosses Mars orbit 61,920 km BEHIND Mars.  Mars is only 7000 km in diameter.

David A. Smith

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#59816

On 3/16/2017 10:25 AM, dlzc wrote:
> On Wednesday, March 15, 2017 at 8:41:45 PM UTC-7, Yousuf Khan wrote:
>>>
>> The article you linked to is from 2011, and
>>> it's about a totally different issue. It's about an early warning
>>> system for solar winds, so putting a satellite at the L1 would
>>> encounter the solar wind 43 minutes before Mars itself does. But
>>> due to the higher speed of light, which gets to Mars in 3.5
>>> seconds, you have 43 minutes - 3.5 seconds of early warning
>>> about it.
>>>
>>> The issue here is not about early warning, but about redirecting
>>> the solar winds completely from Mars. So early warning really has
>>> no bearing on anything here, except that if the parameters of the
>>> magnetic shield need to be adjusted, you have about 7 seconds of
>>> turn around time to react from Mars.
> The solar wind takes 43 minutes to reach the orbit of Mars.  So a
> "shadow" in solar wind created by an object at the L1 point, crosses
> Mars orbit 61,920 km BEHIND Mars.  Mars is only 7000 km in diameter.
>
> David A. Smith

I don't get what you're saying here! Presumably, they can angle the 
magnetic field far enough in advance to aim the solar wind "shadow", 
right as Mars is passing through it.

	Yousuf Khan

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#59818

Dear Yousuf Khan:

On Saturday, March 18, 2017 at 1:10:20 AM UTC-7, Yousuf Khan wrote:
> On 3/16/2017 10:25 AM, dlzc wrote:
> > On Wednesday, March 15, 2017 at 8:41:45 PM UTC-7, Yousuf Khan wrote:
> >>>
> >>> The article you linked to is from 2011, and
> >>> it's about a totally different issue. It's about an
> >>> early warning system for solar winds, so putting a
> >>> satellite at the L1 would encounter the solar wind
> >>> 43 minutes before Mars itself does. But due to the
> >>> higher speed of light, which gets to Mars in 3.5
> >>> seconds, you have 43 minutes - 3.5 seconds of early
> >>> warning about it.
> >>>
> >>> The issue here is not about early warning, but about
> >>> redirecting the solar winds completely from Mars. So
> >>> early warning really has no bearing on anything
> >>> here, except that if the parameters of the magnetic
> >>> shield need to be adjusted, you have about 7 seconds
> >>> of turn around time to react from Mars.
>
> > The solar wind takes 43 minutes to reach the orbit
> > of Mars.  So a "shadow" in solar wind created by an
> > object at the L1 point, crosses Mars orbit 61,920 km
> > BEHIND Mars.  Mars is only 7000 km in diameter.
> 
> I don't get what you're saying here!

Sure you do.

> Presumably, they can angle the magnetic field far
> enough in advance to aim the solar wind "shadow", 
> right as Mars is passing through it.

Only with "new physics".  Either they make a symmetric field 20 times the diameter of what is required (because we only know how to make symmetric fields), or they add a small amount of energy to keep the source that far ahead of Mars.

David A. Smith

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#59829

On 3/18/2017 12:05 PM, dlzc wrote:
>> Presumably, they can angle the magnetic field far
>> > enough in advance to aim the solar wind "shadow",
>> > right as Mars is passing through it.
> Only with "new physics".  Either they make a symmetric field 20 times the diameter of what is required (because we only know how to make symmetric fields), or they add a small amount of energy to keep the source that far ahead of Mars.

You can do it with multiple satellites each orbiting around the L1 
point, they can all be adjusted individually and oriented individually.

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#59777

In sci.astro message <o9p3o5$1gve$1@gioia.aioe.org>, Wed, 8 Mar 2017
08:16:28, S Ergio <invlid@invalid.com> posted:

>On 3/8/2017 6:42 AM, Yousuf Khan wrote:
>> http://www.zdnet.com/article/nasa-proposes-artificial-magnetic-field-
>>to-make-mars-a-second-home/

>>> Green proposes that by placing a magnetic dipole shield at the Mars L1
>>> Lagrange Point, a man-made magnetosphere sphere would cradle the
>>> entire planet.

Sort of.  The dipole would shield the dayside of the atmosphere of Mars
from the solar wind.  By the way, in the past, at least some respected
authors called L1 "L2" and L2 "L1".  The proposal is not by Green; it is
by Green /et al/.

>how far away is Mars L1 Lagrange Point from Mars ?
>about 141,000,000 miles.
Very wrong.

>how does magnetic field strength decline with distance ?
>1/d^2  ?
For that, you need a monopole source.  Point-dipole fields go as d^-3.

>so you need a magnet of at least 2*10^16 telsa ? ?
The field strength at the magnet is of itself not important.  It is the
dipole moment which creates the far field.  Referees should not have
accepted <http://www.hou.usra.edu/meetings/V2050/pdf/8250.pdf> as it is,
on those grounds.

>why not just put it on the surface ? by the way, you will have to water
>cool it too.
Because that is a different, and not useful, idea; superconductors were
discovered about 11 decades ago.  Use currently-available high-
temperature superconductors or better, and cool by shades as will be
done for JWST; allow the magnet to cool by radiation into the rest of
the Universe.


>extra credit questions;
>
>1. how much water is needed to cool magnet that generates a 1 T field
>100,000 miles away. (how is this water stored?)
None; why 100,000 miles, as according to you L1 is at 141,000,000 miles.
(in a zero-litre container).

>2. how much electricity in megawatts is required to run magnet, then to
>pump water.
None.  But energy will be needed to create the dipole moment initially.

>3. what % of partials will be deflected away and outside a 100 mile
>zone on the surface around the magnet? (assume 98% speed of light)
Wrong question.

>4. What type of partials will be hardly by magnet ?
Parse failure.  Try writing in your native language.

>>> While Green admits the idea is somewhat "fanciful,"
>
>this dude works at NASA ???

Why not?  NASA must have canteen staff, toilet cleaners, and PR people.
But the esteemed originators should not be criticised for the failure of
/hoi polloi/ to understand their published proposal, and perhaps to read
it.



The proposal is to deflect the solar wind, without adding energy to it.
Therefore, the wind will press the magnet outwards; the magnet must be a
little inwards from L1, because of that and of radiation pressure.

-- 
 (c) John Stockton, Surrey, UK.  ¬@merlyn.demon.co.uk   Turnpike v6.05   MIME.
 Merlyn Web Site <                       > - FAQish topics, acronyms, & links.

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#59781

On 3/11/2017 3:54 PM, Dr J R Stockton wrote:
> In sci.astro message <o9p3o5$1gve$1@gioia.aioe.org>, Wed, 8 Mar 2017
> 08:16:28, S Ergio <invlid@invalid.com> posted:
>
>> On 3/8/2017 6:42 AM, Yousuf Khan wrote:
>>> http://www.zdnet.com/article/nasa-proposes-artificial-magnetic-field-
>>> to-make-mars-a-second-home/
>
>>>> Green proposes that by placing a magnetic dipole shield at the Mars L1
>>>> Lagrange Point, a man-made magnetosphere sphere would cradle the
>>>> entire planet.
>
> Sort of.  The dipole would shield the dayside of the atmosphere of Mars
> from the solar wind.  By the way, in the past, at least some respected
> authors called L1 "L2" and L2 "L1".  The proposal is not by Green; it is
> by Green /et al/.
>
>> how far away is Mars L1 Lagrange Point from Mars ?
>> about 141,000,000 miles.
> Very wrong.
>
>> how does magnetic field strength decline with distance ?
>> 1/d^2  ?
> For that, you need a monopole source.  Point-dipole fields go as d^-3.

no, the fields vary as d^n  where n is between 2 and 4, and n is also a 
function of d, and orentation of the field.

>
>> so you need a magnet of at least 2*10^16 telsa ? ?
> The field strength at the magnet is of itself not important.  It is the
> dipole moment which creates the far field.

field strength is *the key* design requirement, it drives the rest of 
the design.

  Referees should not have
> accepted <http://www.hou.usra.edu/meetings/V2050/pdf/8250.pdf> as it is,
> on those grounds.
>
>> why not just put it on the surface ? by the way, you will have to water
>> cool it too.
> Because that is a different, and not useful, idea; superconductors were
> discovered about 11 decades ago.  Use currently-available high-
> temperature superconductors or better,

cooling is to lower copper coil losses, high temp superconducters are 
not yet reliable for this, unless you have a url to a 1 T magnet using 
one...

  I think it gets down to watts, if 100 W it probably could be done, if 
2000, probably not.


> and cool by shades as will be
> done for JWST;
allow the magnet to cool by radiation into the rest of
> the Universe.

but all that is limited by # Watts used, and if it is in sunlight, which 
it is.

>
>
>> extra credit questions;
>>
>> 1. how much water is needed to cool magnet that generates a 1 T field
>> 100,000 miles away. (how is this water stored?)
> None; why 100,000 miles, as according to you L1 is at 141,000,000 miles.
> (in a zero-litre container).

you evade the question, how much heat is generated by the super-cooling 
refrigeration unit for a 1 T field at 100,000 miles ? ( leave "T at 
100,000 miles" as a variable)  How many Watts does will the 
refrigeration unit take to keep the unit cool?  how many solar panels ? 
how much storage capacity is needed ?  How much refrigeration fluid is 
lost each year ?  (NASA has supercooled stuff in flight, limited life 
time due to fluid loss)

>
>> 2. how much electricity in megawatts is required to run magnet, then to
>> pump water.
> None.  But energy will be needed to create the dipole moment initially.

not so, see above, [Im sure NASA has info on this, effecient 
supercooling refegeration, not sure about application to a magnet, but 
they probably have a study on it]

>
>> 3. what % of partials will be deflected away and outside a 100 mile
>> zone on the surface around the magnet? (assume 98% speed of light)
> Wrong question.

yep, wrong question to you, as you do not have any answer.

>
>> 4. What type of partials will be hardly by magnet ?
> Parse failure.  Try writing in your native language.

you engrlish teacher ?  this is physics group.

>
>>>> While Green admits the idea is somewhat "fanciful,"
>>
>> this dude works at NASA ???
>
> Why not?  NASA must have canteen staff, toilet cleaners, and PR people.
> But the esteemed originators should not be criticised for the failure of
> /hoi polloi/ to understand their published proposal, and perhaps to read
> it.

  need more engineering before reclassifying from pipe dream to possable.

> The proposal is to deflect the solar wind, without adding energy to it.
> Therefore, the wind will press the magnet outwards; the magnet must be a
> little inwards from L1, because of that and of radiation pressure.
>

which directly goes to what the field strength should be, .

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#59745

Yousuf Khan wrote:
> 
> http://www.zdnet.com/article/nasa-proposes-artificial-magnetic-field-to-make-mars-a-second-home/
> 
> > However, researchers have proposed a way to make Mars more habitable -- by creating an artificial magnetic field to reduce radiation levels.
> >
> > To combat some of the main barriers to sending humans to Mars, as reported by Universe Today, last week, NASA hosted a discussion and presentation group called the Planetary Science Vision 2050 Workshop.
> >
> > At the event, scientists and researchers discussed the future possibilities of space exploration, and during one talk, NASA Planetary Science Division Director Dr. Jim Green proposed ways to deploy a magnetic shield around the planet which could act as a barrier to radiation and reduce the need for extreme protective equipment.
> >
> > The proposal (.PDF) relies on the theory that over four billion years ago, the planet's magnetic field vanished, turning the planet from a warm, wet environment to a dry husk. Without returning some kind of magnetic field to Mars, this situation will not change.
> >
> > Green proposes that by placing a magnetic dipole shield at the Mars L1 Lagrange Point, a man-made magnetosphere sphere would cradle the entire planet.
> >
> > The team says that previous tests in lab conditions suggest that inflatable structures could potentially generate a magnetic dipole field at a level of perhaps 1 or 2 Tesla, protecting against both radiation and solar winds.
> >
> > In addition, such a field could result in Mars' atmosphere thickening over time, creating a greenhouse effect which could increase the planet's surface temperature by up to four degrees and melt northern polar ice caps.
> >
> > While Green admits the idea is somewhat "fanciful," the scientists insist that it is not outside the realm of possibility, and could assist in the future exploration of the planet.



pro·pose
pr?'poz/
verb
3rd person present: proposes

    1.
    put forward (an idea or plan) for consideration or discussion by
others.



Get wit the program...it's fake news.


They sit in a room everyday with only one agenda...pro·pose.


They are simply tryin to remain...revelant, but they are not.


Read the Headline: "NASA proposes..."

It's just fuckin TALK!


Get wit the program...it's fake news.


You're just a wishful thinker...Yousuf.


The first step, think for yourself..

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