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My question about this study is,
If they say that these impacts were enough to cover the whole world in enough superheated rock to outgas enough water to carve all those features episodically, Why is only the Northern hemisphere flat and smooth and what is the chronology between features, and how did they determine this...
-Matt
I remember you Bill,
I remember Galiel too, uugggghhh...I remember that when there was constructive discussion happening he was nowhere to be found, however when an argument would loom, or someone would bring to the discussion an item that hasn't been thoroughly accepted by peer-review, here he came with paragraph after condescending paragraph...
He made decent points in those short novels he wrote, (those I bothered to read) however I don't even remembering him mentioning Mars in those topics at all beyond stating "this forum is for the discussion of Mars civilization and culture" or something to that effect. He only participated in flame wars as far as I can remember.
IMHO - Consider all of us lucky he ain't here...
Your friendly neighborhood Martian...
-Matt
Here, here Shaun. I too invite Caltech to continue sharing his thoughts on this forum.
He has indeed impressed me, he sorta sounds like the opposite version of me a couple of years ago.
To those familiar with the Mars Civ-Culture list, they may remember me as OmegaXa1phaA@aol.com. I first came in there babbling my way-out ideas about changing the world and what not. I learned, after numerous flamewars, that one cannot just go around spouting his/her beliefs without offending someone, and as I got into deeper discussions regarding my reasons behind my conclusions, I found I, despite being more informed than probly 90% of my peers, I was still vastly ignorant to all things.
What is important to realize, IMHO, is, "I don't know everything". but don't be disparaged at this, just remind yourself by saying "I havn't lived long enough to know everything"
I am twenty years old, and have had some crazy beliefs in my short time here on Earth, and I basically maintain them, however they have been reshaped in a way to be more realistic.
I still maintain the hope that if I work hard enough I just may find myself on Mars, but I have since learned that it is a task most monumental, and will require dedicating my life to it, but it may never come true.
The only truely solid thing about myself is my desire to go to Mars.
You see my point is this: You must educate yourself in the ways of the world, but never give yourself wholeheartedly to one set of beliefs. One of the reasons society changes so much slower than technology is that people in charge have had very rigid beliefs ever since the age of 20. Think, our congress had to deal with beliefs that were becoming over half a century old with Senator Strom Thurmand up until this year.
Don't ever make your beliefs so rigid that they cannot be wavered. You see, if you wont allow your beliefs be questioned and debunked by others, why do you expect others to do it when the encounter your philosophy...
Anywho, enough rambling, I have to go to Math class...
-Matt
Jesus, a conservative teenager, what the hell is happening in this day and age. Heh heh.
Those are some mighty strong beliefs Cal, I hope you leave yourself flexible for a little longer before you commit yourself.
Hell, you're still young, you should be building stronger bonds with your friends, spreading the word about Mars and whatnot, playing videogames and studying algebra. Its great you have a firm foundation of knowlege on which to base such strong opinions. But remember, your opinions will ultimately affect how you percieve facts, so don't let your lense of perspective get too weighted down by your opinions.
As for Bush (and I'm saying it this way for our good friend Cal): He is a mothe*@&$&*@(%* of a &@&%*@*%@(*@&@%@* idiot!!!!. heh heh.
I'm from El Paso TX, where there has been a long standing dispute between the state and the local Native Americans, the Tiguas. See the Tiguas say they can gamble on their reservation, TX state law prohibits casino gambling.
The situation has yet to completely resolve.
I am under the impression that if Bush can't handle domestic problems with native american reservations, how is he supposed to handle the middle east...
More later, probly..
-Matt
Okay, I'm back, after some downtime...working on school and other ventures...
Heres a question from my AstroLab class that is relevant here...
The question is written as follows:
We can't just return to Earth anytime we'd like to (from Mars). We have to wait to take off (in order to conserve fuel) until the Earth will be in the proper positioin at the end of our transfer orbit home. In general, we will have a long wait, but we'll assume we have the provisions necessary to make it through (and in the meantime, explore Mars)
An accurate calculation of the time we will have to wait is complicated, but we can put an upper limit on it by realizing that after on synodicc period the Earth will be in the same place, relative to Mars, as it was when we landed. Surely the two planets will go through the proper configuration for launch before then. Using this formula:
1/Psyn = (1/Pearth) - (1/Pmars)
Psyn - synodic period of Earth and Mars
Pearth - Earth's orbital period
Pmars - Mars's orbital period
Calculate what the synodic period would be.
This is where I hit my roadblock. Though this formula looks simple, I cannot seem to get the right answer, unless .465240641711 is correct. (which I doubt)
Anyone out there, preston I'm looking at you, heh heh...
Thanks
Your friendly neighborhood busy body Martian...
-Matt
Here in El Paso (desert southwest US) the diversity is very poor.
There is 4 or 5 different contractors that build neighborhoods. Each new one they build contains like 100+ houses of 3-5 different designs ,not necessarily for variety, but for different price ranges. And these designs just look like varients on a single model. You can obviously pick out the order from cheapest to most expensive. The small 1 story, 1 car garage, The small two story, 1 car garage, the large 1 story, 2 car garage, and the large two story, with a 2 car garage.
Its gotten so bad around here that paint jobs are even uniform. Especially in neighborhoods built after 1990, the ones built prior to that may have differing paint jobs, because the old paint has had time to deteriorate.
I live in an older neighborhood (i think it was built in the 60s) in which right out my window I can see more than 5 varieties of house. I'm sure that the quality of the structure is far better than those newer homes.
I can see from my vantage point that all the houses, despite having different styles do have one thing in common, they are made of brick, and a friend of mine lives in an older neighborhood in which houses are made out of cinderblocks.
These days the houses appear to be made out of Stucco or that material the supercorporations now use to build their cubical shaped fast-food restaurants. (remember when Taco Bell would build their restaurants out of brick to look like little missions, have you seen a freshly build one lately, they look like fiberglass cubes with the latest hip logo on the front.)
I'm no economist, but it seems plain to me that drive for profit motivates people to cut corners, and in plances where buildings are prone to natural disaster, these sort of practices are completely unacceptable, in fact they are as such anywhere.
Your friendly neighborhood Martian...
-Matt
Clark,
Simple question,
How come you are OK with the government pushing the old imperial measures down out throats then?
If anyone here is pushing for conversion, they don't want it to be used only because of some sort of mandate from above.
They are arguing the practicality of the metric system.
And as for the language and poverty thing, (which according to you if we should adopt metric because of majority rules, we should also adopt Chinese and poverty because most people speak and live that way) these arguments don't make sense, switching to metric is just easier on the mind, I'm not sure how much easier Chinese is to learn and speak for a non-chinese than it is to learn english for a non-english speaker.
I may be stepping into hot water for saying this but...
Clark, I thought you were all American, I'm not making my argument based on it, but you respond to the majority rules thing strangely, I thought that was Democracy, plain and simple.
Thats cool though Clark, I like that, at least one American is thinking individually...
-Matt
First, the new images shown on the homepage are quite detailed. They depict outburst gullies in a crater wall.
I can see evidence of older channels underneath more recent flows. And the largest channel appears to be quite recent, and boasts a very large cave-in feature at its source.
However I am experienceing a slight difficulty in interpreting the lower half of the image.
I see it as two ways, either as a dune field (easy answer) or the layered deposits of continued outburst activity over a VERY long time.
Smaller dunes appear to have formed on top of them, possibly from the sediment deposited there...
Anyone out there see the same thing or am I in dire error...
Your friendly neighborhood Martian...
-Matt
As for everyone agreeing on a single body of car,
This argument is also invalid in that choosing a car body is up a person's own tastes and everyone having the same body of car really doesn't solve any of the automobile industry's problems.
If every car produced was exactly the same, then that would probably make capitalism in the automobile industry impossible, wouldn't it?
Anyways, I'm sure the USA isn't keeping the Imperial measures for purposes of style, I'm fairly sure it is the initial cost of making the conversions
-Matt
Clark,
I think your argument against metric (i.e. if we switch because most people use metric, then we might as start speaking Chinese because most humans speak it, which by the way is probably a strange thought to most people) is invalid. Unless you are talking about the efficiency of conveying information, I wonder if anyone has done a study to calculate exactly how much information can be exchanged by different languages given a perion of time, hmm...
Anyway, I digress...
Metric is a best system yet developed because of the ease of conversion from one size unit to another. A simple system of 10s, moving decimal points.
And sure, I'm sure all the American born and raised people on this list had little to no trouble learning and applying the standard system, but I'm sure that in the back of everyone's mind when they were first learning this as a child she/he had the feeling that something just wasn't right the way these numbers came together.
Metric rectifies this perfectly in my mind, it makes sense, only the base units, m, l, g, and the like, are arbitrary.
In the end all systems of measurement are completely arbitrary, I think we should be using the one that is a little less arbitrary than the others.
Your friendly neighborhood Martian...
-Matt
Another plus to switching, already touched on by Phobos in the "Homework Help" thread, no more Mars probe foulups with getting the type of measurment wrong...
-Matt
I think one of the reasons, primary reasons, that the US has not converted is the cost of doing so.
Imagine the cost, local and federal, of changing EVERY SINGLE ROAD SIGN with anything standard written on it.
Aren't values on the american stock exchange also given in standard? (ex: barrels or oil)
Incidentally, I find it strange that the country that invented the standard measures no longer uses them, while the country that broke away from them more than 200 years ago still uses the old ENGLISH system. You'd think that whole US pride and patriotism stuff woulda kicked in as soon as metric became availiable, eh...figures...
Your friendly neighborhood Martian...
-Matt
This is it, the thread you've all been waiting for, heh heh.
Well here is where you should post you opinion on the Metric system, and reasons for converting to it in the USA. (or reasons against converting to it)
My opinion is that we should make the conversion here in the states ASAP. Converting will be a major undertaking, but the hardship involved in doing so will be far less than having to deal with the strange system of measurments invented arbitrarily according to some monarch foot length and what not (if those myths are true, any English out there who can clarify?)
Your friendly neighborhood Martian...
-Matt
Uhh...
Not to be pushy or anything like that. This is a thread related to homework, not necessarily the merits of metric conversion.
Don't get me wrong, I do think metric is the way to go, and the ridiculous arguments Americans in particular make against metric are a little weird.
They counter with strange fears and stuff like that, its almost as if you asked them to question their faith in their god when all you asked them to do was question their system of measurments. (even though, even for the religious questioning their god would be a good thing, I mean, if your faith is actually worth having faith in, it should be able to withstand questioning...but that my humble opinion and I'm sure that many people would call me a sinner and damn me to hell for it, or worse, the most devious of christian tactics would be employed, they would feel sorry for me and try to "save" me)
Anywho, I'm sure a metric thread will do fine here, I may create one, if someone hasn't beaten me to it, so as to better keep this thread on Topic...
Your friendly neighborhood Martian...
-Matt
Thanks Shaun, Preston, others...
Wave after glorious wave of understanding have left me euphoric.
I knew it was somewhat simple, I was just blind to it.
I forgot you could simply add exponents when multiplying, also the quotient rule for exponents and radicals, which helped bring the exponent from the bottom to the top.
Once that was done everything else came together, it seems I was intimidated by the scientific notation.
My road to becoming a scientist has barely been made visible to me, and some hurdles I have already past, and I know of a few I will have to tackle later...
For anyone who is interested I am scoring 100s or over in my Geology class (over due to extra credit assigments)
And is it Arizona State University at Phoenix that has the planetary geology programs? Do they have specific requisites that I may have to accomplish in order to be accepted there?
Thanks again for all the help, It was much appreciated.
And as for the fate of this thread, I'm sure I can keep it going with fresh questions such as, "Sidereal period, example: Mercury" <~~~any takers?
I encourage any other students floating around these forums to utilize this, not only for help, but perhaps a little something here and there to broaden the horizons of others...
Your friendly neighborhood, appreciative, Martian...
-Matt Gillespie
I must be incredibly dense, because I'm still having a tremendous amount of trouble with the equation for escape velocity...and its due tonight, acck...
Even if it come too late please explain step by step with me.
And if you are the one to do it Preston, please include the equations like you did in your last post, for every step (if you would, I don't know how much of a pain it is to insert those things, so only do it if you want to of course, I don't want to sound bossy)
Thanks,
-Matt
To any who have the knowlege, time, and patience...
Now, nothing major, and I know its a simple piece of vocabulary, but please explain Sidereal Periods to me.
I'm good with conceptualizing most things of this nature, however I still lack a concrete underpinning of this term.
I know it relates to planetary motion, something to do with the amount of time it takes the sun to return to the same place in the sky (or perhaps any other body other than the sun)
If this is the case (or even if it isn't) what would you say about the sidereal period of a planet like say, Mercury?
Thanks again,
Your friendly neighborhood, rapidly educating, Martian...
-Matt
Thanks folks, I havn't the time right now, however I will definately mull over this in the morning...
Thanks Preston, your help is greatly appreciated,
And thanks Shaun, I'm sure you would have been of help if you had made it in time...
-Matt
Actually this question has me very befuddled...
If you or anyone else will go through it step by step with me, I will be very very appreciative...
This is EXACTLY how it appears in my text book...
76.
Escape velocity is the minimum speed
that an object must reach to escape a
planet's pull of gravity. Escape ve-
locity "v" is given in the equation
|----------
v = V 2Gm / r (that is the square root of 2Gm/r)
the planet, r is its radius, and G is the
universal gravitational constant which
has a value of G = 6.67 * 10^-11
m^3 / kg * s^2. The mass of Earth is
5.97 *10^24 kg and its radius is
6.37 *10^6 m. Use this information to
find the escape velocity for Earth.
Round to the nearest whole number.
As you can see, much of my problem lies in how the question was printed in the text. Not to mention the fact that it does nothing to clarify the gravitational constant, namely what value to substitute for "s"
Thanks again...
-Matt
Thats funny, it says s^2 in my book.
And it didn't bother to mention what s meant.
Do you solve for s then? And what value do you enter for kg, 1000?
Thanks a lot Preston,
-Matt
meant to put this in before I sent...
My main confusion is how do I put together the formula for the univerasal gravitational constant, and what m^3/kg * s^2 means...
-Matt
Hello all,
I am currently in community college and I was wondering if any of you out there could help me with a pesky math question. (for clarification all numbers that are preceeded by ^ are exponents)
Its the formula for escape velocity where, v = 2Gm/r
(2Gm/r is all under a square root radical sign...don't know how to make them here)
when:
v = escape velocity
m = mass of object (earth = 5.97 * 10^24)
r = radius of object (earth = 6.37 * 10^6)
G = The universal gravitational constant.
This is where it gets tricky for me, because of the way it is printed in my textbook. I have no idea how to read it. I will type it here as it is typed there...
"...G is the universal gravitational constant
which has a value of G = 6.67 * 10 ^-11
m^3/kg * s^2. The mass of Earth is..."
Imagine my confusion. My teacher gave us this as a single question homework assignment. Any help would be appreciated. I don't want you to do the work for me but if you can clarify the universal gravitational constant part, I would be very appreciative...
Your friendly neighborhood, flustered, Martian...
-Matt
Those sound like good Ideas to me, if only there was a way to simulate 1/3 gravity.
On the topic, is it just me, or is the Devon Island analog station a little less than what was to be expected?
I mean the length of time it took to build the habitat was sort of ridiculous, in the weeks i believe...
Your friendly neighborhood Martian...
-Matt
Oh, you don't have to worry about me trying to defend TEM,
I have recognized them long ago for the quacks they are.
In regards to the "cloud," I was just trying to see if you knew, you never answered me before so I thought I'd mention it again.
I don't think that is very honest of you to use something that you obviously know about in order to "hook" people into the presentation.
I have not said anything about the rest of the site's content, I lack the ability to construct a proper critique, however I can say this, I does seem that liquid water is probably commonly found on the martian surface if you know where to look for it. I made this judgment based on your photos and explainations, as well as a study that Chris McKay participated in that I linked to from your discussion forum.
I have also seen many MOC images that appear to contain a sort of dirty liquid.
They appear in many craters south of -60 degrees, near the south pole. This correlates with Mars Odyssey's findings of hydrogen concentrations around the south pole.
They look like ponds of some sort of liquid (determined by how sharp the boundery is between this "liquid" and the surrounding crater floor) filled with what some have called floaters (potential lifeforms)
I'll find the link that another member of this forum provided in another thread and repost it.
I'm not totally convinced of this of course as MSSS writes these features off as "defrosting sand dunes," I will list some image numbers for these things.
Anywho, you seem on the level Tripp, what do you think these are?
Your friendly neighborhood Martian...
-Matt
Here Here!
I would definately like to hear your opinions on the matter.
As well as I would like to hear how come you see a rain cloud in one of the images presented on the Link you provide ragarding Martian water bodies.
This is an MOC wide-angle image of Hebes Chasma north of Valles Marineris, I checked the image on the MSSS gallery with the help of the image number you provided...
I think perhaps you will think twice before critizing people for their ability to interpret these images, obviously anyone is capable of drastic error.
Your friendly neighborhood Martian...
-Matt