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#476 Re: Life support systems » Moss » 2005-01-28 08:44:06

Moss doesn't grow in a deformed fashion in zero-gravity, unlike more complex plants. 

Hmm...

Moss is photosynthetic.  Perhaps it can be used for life support?  Are there edible varieties of Moss?

#477 Re: Unmanned probes » Cassini-Huygens III - Continued from previous » 2005-01-27 15:38:08

The methane not being due to life sounds entirely logical.

Now all they have to do is prove it.   :;):

To do this, I'd recommend verifying that there is virtually no carbon-14 in Titan's atmosphere.  (C14 comes from nitrogen and cosmic rays, not existing methane.  Only an active chemical process - like respiration - can lock it up in C02 or CH4.)

Can they do that?  Or are they just guessing?

#478 Re: Not So Free Chat » Corporal Punishment on Mars - Should it be Permitted or Not? » 2005-01-27 06:41:12

Scott, you keep presenting examples of children beaten by authority figures, but are they relevant to the issue of corporal punishment as a discipline method?  True, "I was trying to discipline" the child was used as an excuse in each case, but in each case the actions of the person doing the beating clearly escalated beyond that.

Do you mean to imply that because the states of Texas and Illinois allow corporal punishment that this somehow constitutes a legal defense for these actions?  Even Texas has laws prohibiting child abuse, assault, and manslaughter - yes, even Texas - and last I checked, these states recognized no sufficient justification for committing these crimes with intent.

You seem to be arguing that corporal punishment is a slippery slope. 

Crime is inevitable, Scott.  Incidents like this happen where corporal punishment is not public policy just like they happen where it is.

#479 Re: Not So Free Chat » Morbid Stuff » 2005-01-26 14:06:36

...I'm somewhat biased in the direction of all religion being a means of enrichment/entertainment for those acting in its name, even when they truly believe it.

Well, yeah!  Of course, that's not the only reason to affiliate with a religion - there's charity and all kinds of social support from your fellow affiliates, too.  However, IMHO, that's one of the big reasons people begin religious lives.

If you're not enjoying it, you're not doing it right. 

Ian, you wrote:

The Judeo-Christian god makes you suffer in hell forever.  And his priests have to be celibate.

A gross simplification, and simply not true.  For every single point in that statement, I can think of some Judeo-Christian derived sect somewhere that takes exception to it, including the assertion that there is a God.

#480 Re: Not So Free Chat » Corporal Punishment on Mars - Should it be Permitted or Not? » 2005-01-26 06:43:57

The contrast between you enlightened people and the Barrett family is stark.
    My kids were brought up in a harsh and uncertain environment where swift and terrible punishment could be meted out at any moment. The terror was palpable all day, every day.

:laugh:

I've often wondered what parenting options I might have explored without my current legal obligations.  A meter long paddle sounds a bit excessive, but maybe just to hang over the door...

Of course, in the family I grew up in, we'd have had it down to fight each other with...

#481 Re: Not So Free Chat » Corporal Punishment on Mars - Should it be Permitted or Not? » 2005-01-25 10:27:05

Oh! Another peripherally related thread where I can act like I know what I'm talking about!   cool

Ahem...

When my wife and I became foster parents, we signed a contract forbidding us to use corporal punishment in any form, whether we liked it or not.  (We signed, with foreboding.)

According to the nice folks at the Office of Community Services, there are several reasons behind that requirement. 

Corporal punishment isn't widely believed to work over the long term.  It appears to be mainly employed as a "quick fix" for difficult behaviors, to make the child stop immediately, but there's little evidence that it has lasting effectiveness.  (You can stop Johnny's screaming in public with a good "brain duster", but you can't keep him from doing it again without some other form of discipline.)  It rewards the parent, too,  giving them a sense of control coupled with instant gratification, so there's the potential for abuse.

Where it is seen to be effective, that effectiveness hinges on the child's trust for the parent.  As an illustration, imagine that you are walking along when a grizzly bear runs out of the forest, snatches you up, throws you over a log, and paddles you.  Are you likely to philosophically accept your discipline and try to do better for brother bear, or are you likely to scream and attempt an escape at all costs?  Without instilling trust in the child through other means, corporal punishment is just a waste of muscle power.

Then there's the biblical argument.  "Spare the rod and spoil the child" is the most quoted biblical proverb used to defend the use of corporal punishment.  That verse refers to a shepherd's crook.  If you've ever seen someone use a rod to herd sheep, you'd know that the sheep are rarely struck fiercely at all, if ever.  A tap here and there to guide them, and occassionally some very angy whacking at the ground are the most common uses.  True, the sheep sometimes need a good smack.  You can, in fact, kill a sheep with a well placed blow from a crook.  But if all that you know how to do is whack your sheep upside the head, that makes you a very lousy shepherd.  Likewise, if all you know how to do is spank your kids, that makes you a very lousy parent.

I can't tell you that I've never encountered a circumstance where a good hand-slapping wouldn't have been very useful (or at least, very satisfying).  Even after all my practice at avoiding it, I still believe that corporal punishment can be effective in some circumstances.  Regulating its use is a good idea; outlawing it is not.  However, there are so many other means of discipline that I can assure you that you will not miss it if you opt to do without.

All the luck in the world, Bill.

#482 Re: Science, Technology, and Astronomy » Emergency Solution to Global Warming - If the doomsayers are right afterall... » 2005-01-23 19:54:26

Convert terrestrial cities to Marsian technologies.  Every new skyscraper in the world already has heat exchangers and other environmental control systems.  What's a little more life support capacity?  You can already walk from one end of downtown Kansas City to the other without ever seeing the sky.  What's a few more miles of tunnels?  We only have the resources to effectively convert a few percent of the Earth's surface into marsian analogs, so why not concentrate on the few percent where a quarter of us already live - cities?

If we can build a city on Mars and live in it comfortably, Earth should be a snap even with catastrophic global warming.

#483 Re: Science, Technology, and Astronomy » Wind mill generator on Titan? » 2005-01-20 15:03:13

But the sounds suggested blowing, and other instruments detected surface winds of about 25 kilometers per hour (16 miles per hour)."

Well, surface winds are certainly not upper altitude winds.  Given mean winds of even half that amount, an aerostat-suspended or tower-supported windmill is a possibility.

Still... I don't wish to impune the journalistic integrity of the good people at the Turkish Daily News, but do you have another source for this information, Errorist?

#484 Re: Science, Technology, and Astronomy » Titan is a moon of frozen water at the surface. » 2005-01-20 14:56:02

Either way, the water would NOT remain liquid long enough to erode.

Indeed, the pebbles seen on Titan's surface in the last probe images are as likely to be water as anything else.  Water could easily form the rocky portion of Titan's soil, much like silica sand here on earth (with about the same consistency). 

What would form moisture in that soil is something a lot of people would very much like to know, because it appears to have some.

The liquid on the surface of Titan is Methane.

Do we know that for certain?  The surface temperature is just high enough and the apparent bodies of liquid are just big enough to call this into question.

We sure as heck know they're not water, though.

#485 Re: Science, Technology, and Astronomy » Wind mill generator on Titan? » 2005-01-20 08:58:27

A balloon or airship might be very promising in that environment.  Methane should work as a lift gas on Titan just like it does on Earth, and hydrogen should be available from cracking the Titan atmosphere directly.  We could land a probe with an ISRU package on the surface and have it take to the air a few weeks later.

Naturally, wind power or no, we should go back.   cool

#486 Re: Science, Technology, and Astronomy » Wind mill generator on Titan? » 2005-01-19 14:56:42

Windy little moon.  Big ocean.  Hmm...

How easy would it be to automate a sailboat?

#487 Re: Unmanned probes » Cassini-Huygens III - Continued from previous » 2005-01-19 14:11:38

http://www.spacedaily.com/images/saturn … jpg]mosaic

This is wierd.  How do you explain how the 'river system' in the center of the image seems to start from the dark area as a 'delta', loop into the light area, and then re-enter the dark area as a large 'river'?

That pattern is unusual for a river tributary but not for a river delta.  In the river delta scenario, all flow is toward the ocean whether there is a split in the river or not. 

Still, you bring up an important question:  If this is a delta, where's the rest of the river?

The river system is likely much larger than the area imaged.  Note that the resolution of the area around the edges of the imaged area fades away to almost nothing.  That poorly resolved area is probably where the river flows in, but our view of that area is lost in the haze.  Huygens never saw the river, just its mouth.

#488 Re: Unmanned probes » Cassini-Huygens *2* - ...more Saturn/Titan... » 2005-01-14 15:25:08

What the -

Surely those are not craters in the middle of the sea!

Get those out of there!  How dare reality interfere with my theory!   :laugh:

(I can wait to see the processed images!  Titan looks very geologically complex.)

PS: Judging from the fact that they're apparently the same shape at all angles even though the _terrain_ doesn't seem to be, my "craters" might be raindrops on the lens or some other artifact.

#489 Re: Unmanned probes » Cassini-Huygens *2* - ...more Saturn/Titan... » 2005-01-14 15:16:22

It sure looks like shoreline.  I think I can make out barrier islands in that initial photograph.  That implies wave action. 

However, the pattern of channels in that apparent delta is a little... odd.  It's within the realm of possibility that we may not be looking at an active river system in that first photo.  (I hope so, though.)

Those smoothly rounded surface rocks definitely suggest a river somewhere.  Where?

Does anyone have an estimate for how far away the probe actually landed from that delta formation in the first released photograph?

Gee.  Rivers on Titan.  Delta country on Titan.  SEAS ON TITAN!  cool

#490 Re: Unmanned probes » Cassini-Huygens *2* - ...more Saturn/Titan... » 2005-01-14 12:19:59

"We know that it has landed based on the laws of gravity," Southwood said. "It simply cannot still be flying. It's got to be on a solid surface, and it must be soft."

Is the ESA science director referring to the landing or the surface?

Perhaps Huygens has landed in a bush...   :;):

#491 Re: Not So Free Chat » More on Global Warming - This is interesting... » 2005-01-13 16:38:51

Actually, sea level changes are a scenario that I believe quite likely if global warming persists more than a century or so. 

It's got nothing to do with the polar ice caps - there isn't enough water in them to make any noticeable difference, even in Tuvalu.  However, as the ocean water warms, it exchanges heat with its lower layers over the course of several centuries.  The warmed water - eventually the bulk of the ocean - will expand, changing the sea level.

#492 Re: Mars Analogue Research Stations » Do your own research for the cause! - What have you done for Mars Lately? » 2005-01-13 14:50:25

Propane conversion kits are quite popular for off-road vehicles in Hawaii, I understand.  There's also a supplier in Texas.  If you want one to modify for use with an oxygen feed instead of air, they're available new or used.  I'd suggest conducting your initial tests under water rather than in a vacuum environment - it's cheaper.

My own personal interests center around a new, yet ridiculously simple power technology called "thermoacoustics".  Thermoacoustic devices are usually structurally simple and easy to manufacture, require little power, and have potential use in a wide range of applications.  To date, we've only begun to scratch the surface.

#493 Re: Not So Free Chat » More on Global Warming - This is interesting... » 2005-01-13 14:26:01

When preparing for "The Coming Global Superstorm" and "The Day After Tomorrow" sudden-onset ice age scenarios, it is necessary to plan for the fact that foods and ammunition have limited shelf lives.  You must continually use and replenish your bulk storage over time in order to insure that your larder and arsenal will be ready when needed.

Just FYI...   :;):

#494 Re: Not So Free Chat » U.S. Culture - ...where's it going? » 2005-01-13 14:08:02

Thank you for doing your part, Clark!    :up:

You're now ready for your next step in what appears to have become the new American dream: laparoscopy!  There are several highly recommended clinics in this part of the country where you can get a new "lap band" surgically installed on your stomach. 

Just let me know, and I'll send you the details.  Gosh, Al Roker would be so proud of you!   :laugh:

#495 Re: Human missions » The use of Nasa resources for science - other than space exploration » 2005-01-12 14:56:30

But where is the pay back for the use of there personel and equipment? ???

The article does say nothing about reimbursement.  However, even if there was none, donating time on proprietary equipment is not unusual even for profit making ventures, much less non-profits and government agencies.  The article does say:

"Marshall is one of the few places in the world with the technology needed for such a complex scan," said Dr. Chris Beard, curator of vertebrate paleontology at the Carnegie Museum of Natural History in Pittsburgh.

I doubt it's ever been used on anything not manmade.  Maybe they wanted to test their system's capabilities and show it off just as much as the folks at the Carnegie Museum did.

After having tried so desperately to become an academic institution for three decades, it doesn't surprise me to see NASA doing what other academic institutions do.

#496 Re: Not So Free Chat » What kind of villain are you? » 2005-01-11 15:57:53

Says here, I'm a Sneaky Villain! 

I'm apparently in fine company, hiding out with the likes of The Jackal, The Invisible Man, and Beni (you know - from the Mummy?)  Any of you evil geniuses need a weasel for hire?

#497 Re: Life on Mars » Oil on Mars - Dead fish or fossils couldhavemadeoil » 2005-01-05 14:55:58

There is a theory that crude oil - unlike coal and other fossil fuels - could have an inorganic source. 

However, regardless of its source, surface oil seepage from underground deposits happens all the time on Earth.  There's no reason an oil-bearing Mars wouldn't have seeps as well.

#498 Re: Life on Mars » More fossil-like images from Spirit - Wierd rock looks like brachiopod imprint » 2005-01-05 11:53:45

Crabs on Mars!   Oh no!  sad   

Well, now that we're forewarned, it shouldn't be much of a problem.  We'll just have the first crews bring a supply of permethrin shampoo.  It'll clear that right up...    :;):

#499 Re: Human missions » NASA Exploration of Mars Strategic Roadmap Committ - Planning the future. » 2005-01-05 06:31:10

The NASA Administrator hereby establishes the NASA Robotic and Human Exploration of Mars Strategic Roadmapping Committee (the “Committee”), having determined that it is in the public interest in connection with the performance of Agency duties...

Well, it's about freaking time. 

This looks like a good thing for O'Keefe to allow on his way out.  I hope the next administrator is equally tolerant of this attempt to reintroduce vision to the agency.

#500 Re: Not So Free Chat » Predictions for 2005 - Dusting off the crystal ball... » 2005-01-04 07:16:07

Hmm... Okay, time for my predictions.

I predict that I will not keep my new year's resolutions. 

I predict that the Iraqi elections will proceed as planned in spite of objections from the Iraqi defense minister and a lot of really scared observers.  Voters will actually show up.  However, a second election will need to be scheduled within six months to replace all of the assassinated candidates. 

The civil war in Iraq, of course, continues unabated.

I predict that the truce between the Indonesian government and the rebels in Sumatra will continue, mostly because of the efforts of the Red Crescent.  The US will fail to meet its official aid pledges for tsunami relief, and Al Qaeda will step up recruiting in affected areas, including Sri Lanka and the Maldives.

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