Possible 2014 comet impact to Mars could make it habitable.

I'll suggest it will take more comets on Mars than on Earth to
make the same delta\equal rise in surface atmospheric pressure.

2 bottles of Costco brand beer................Trig

On Saturday, March 9, 2013 8:17:07 PM UTC-8, bob haller wrote:
On Mar 9, 8:37*pm, Orval Fairbairn wrote:

In article ,

*"John F. Eldredge" wrote:



On Tue, 05 Mar 2013 08:31:02 -0800, Robert Clark wrote:



Speculation here that such an impact could make Mars habitable:



Rush to Mars: Comet impact could make Red Planet inhabitable. Published

time: February 28, 2013 16:32

http://rt.com/news/mars-comet-tito-flyby-601/



* Bob Clark



You would need thousands of comets' worth of gas to make Mars' atmosphere

dense enough for human life, plus you would probably have to introduce

some sort of genetically-engineered plant to release free oxygen, then

wait a long time.



That's a pretty good assessment.



if theres enough water under the mars surface it could be electrically

turned into oxygen and hydrogen to provide breathable air. or

genetically engineer some lichen that would produce air.

Just add time. How many millions of years? What level of nitrogen
will this creation require?

On 3/9/13 10:17 PM, bob haller wrote:
if theres enough water under the mars surface it could be electrically
turned into oxygen and hydrogen to provide breathable air.

Only to be scoured away by the solar wind.

"bob haller" wrote in message
...

On Mar 8, 4:22 pm, "Greg \(Strider\) Moore"
wrote:
On Mar 8, 12:22 am, Fred J. McCall wrote:

bob haller wrote:

It appears we may be entering a littered area of space......

Oh, it doesn't appear like any such thing.

--
"Ignorance is preferable to error, and he is less remote from the
truth who believes nothing than he who believes what is wrong."
-- Thomas Jefferson

Go google it, life changes on earth are cyclical. We may be entering a
littered area of space. Just like the persides meteor shower but on a
much larger scale

How about YOU FRACKING CITE a reference for a change.

Who knows, you may be right here. Maybe Fred is wrong. But you know
what,
without an actual cite (google it doesn't count), I'll take Fred's word
over
yours based on your track record.



--
Greg D. Moore
http://greenmountainsoftware.wordpress.com/
CEO QuiCR: Quick, Crowdsourced Responses.http://www.quicr.net

http://www.sfgate.com/news/article/M...UC-2693228.php

There are lots of references to this on the net, its a well known issue


That's a start. Now, I suggest you read what you cite.

"Rohde, however, prefers periodic surges of volcanism on Earth as the least
implausible explanation for the cycles, he said -- although it's only a
tentative one, he conceded."

So even the authors of the study can't agree on the cause (if such a
timetable even actually exists).

In addition, the articles doesn't necessarily describe a more littered area
of space, but possibly an area of space that causes more perturbations in
things such as the Oort cloud.

But at least you tried citing something.




--
Greg D. Moore http://greenmountainsoftware.wordpress.com/
CEO QuiCR: Quick, Crowdsourced Responses. http://www.quicr.net

On Sun, 10 Mar 2013 07:06:29 -0500, Sam Wormley wrote:

On 3/9/13 10:17 PM, bob haller wrote:
if theres enough water under the mars surface it could be electrically
turned into oxygen and hydrogen to provide breathable air.

Only to be scoured away by the solar wind.

How long did it take Mars to lose its original atmosphere to the solar
wind?

On Mar 10, 5:06*am, Sam Wormley wrote:
On 3/9/13 10:17 PM, bob haller wrote:

if theres enough water under the mars surface it could be electrically
turned into oxygen and hydrogen to provide breathable air.

* *Only to be scoured away by the solar wind.

Anything to keep humans out of space, eh, Sam? If Mars' primeval
atmosphere was eroded away by the solar wind, remember that took
billions of years, during which the sun's radiation was much stronger
than today:

http://science1.nasa.gov/science-new...01/ast31jan_1/

"To calculate the total loss of atmosphere," he added, "we must take
into account how the Sun has changed during the past four billion
years. The Sun's ultraviolet output was larger in the past, and the
solar wind was probably much stronger. This means that solar wind
erosion was likely much more effective in the past than it is today."


Mark L. Fergerson

On Saturday, May 4, 2013 10:55:53 PM UTC-7, wrote:
On Mar 10, 5:06*am, Sam Wormley wrote:

On 3/9/13 10:17 PM, bob haller wrote:



if theres enough water under the mars surface it could be electrically

turned into oxygen and hydrogen to provide breathable air.



* *Only to be scoured away by the solar wind.



Anything to keep humans out of space, eh, Sam? If Mars' primeval

atmosphere was eroded away by the solar wind, remember that took

billions of years, during which the sun's radiation was much stronger

than today:



http://science1.nasa.gov/science-new...01/ast31jan_1/



"To calculate the total loss of atmosphere," he added, "we must take

into account how the Sun has changed during the past four billion

years. The Sun's ultraviolet output was larger in the past, and the

solar wind was probably much stronger. This means that solar wind

erosion was likely much more effective in the past than it is today."





Mark L. Fergerson

Here is a crazy question. What would it take to manufacture a magnetic
field for a planet? Has anyone run the numbers? I've this tingling feeling
it is in the realm of doable. A managed Mars with a extra uber magnetic
field and a renewed atmosphere might have a habitability span equal to or
greater than the home planet. Understanding habitable may mean an oxygen tank
for the expat earther.

Trig

On Sunday, March 10, 2013 5:06:29 AM UTC-7, Sam Wormley wrote:
On 3/9/13 10:17 PM, bob haller wrote:

if theres enough water under the mars surface it could be electrically

turned into oxygen and hydrogen to provide breathable air.



Only to be scoured away by the solar wind.

The issue is for how long? As I hinted the effects of solar wind
maybe be blocked with proper terraforming i.e. a synthetic magnetic
around the planet. Indeed a synthetic planetary grid may be just a
part of planetary power grid. Granted beyond this it likely would take
many many comets crashing into the planet to plump up the atmosphere indeed
it would take a more massive atmosphere to reach an earth full bar atmosphere.
And also why assume the goal is a breathable atmosphere for humans? I'd suggest
climatic temperature and how plants do maybe much more important. Humans
may need to wear an oxygen tank. Mars receives less light and it going to
have a less productive biosphere than Earth's. Nevertheless with a terraformed
atmosphere it could yeild a more secure state than Earthsurface has when incoming space rocks and comets hit the atmosphere. Plus in deep time such a terraformed Mars might last longer than Earth when the Sun grows towards its red giant stage. Do you want to suggest the Sun won't fuse away it's fuel?

If a terraformed Mars lasted only a couple of million years would doing
so make sense for mortal man? I think so. If you plan to live several millions
years then you may have problem. Even then that a bit of time to seek the
next step.

step by step......................Trig