Green Baron

Nice. But wouldn't the expansion start on the horn with maximum speed and slow down, reaching zero on the outer equator, and then contraction kicks in with increasing spead ? But the observation is an increasing expansion speed ... how would that fit ? Also, do we need yaf (yet another force) to explain the speed control of expansion/contraction ?

Thanks for your words Wasseem, you grew up in a country that's been exposed to the proxy-wars of the superpowers for almost 3 generations now. I bet the situation would be much better if the recent political past and coexistence had been more peacefull. I mean, you are a perfect example of peaceful coexistence of different people :-) I've only to the arabian peninsula. There the local arabs are the lords, pakistanis and indians do the work. The countries are rich from the oil. For outlanders it's safe as long as they stick to the rules and the social order. There was a case of an arab who stepped totally drunk on a road and was killed in an accident, the driver of the car was pakistani. If the police had not arrested him right away he would have been murdered by the crowd. I've also been to central and east Africa (Jambo !). In some places, away from the cities, the enmity towards foreigners is much more seizable. The people in the lands are very poor and the regimes terribly corrupt. In the wrong places and showing the wrong behaviour foreigners can get robbed for the clothes they wear. A white man walking alone is soon surrounded by kids "pipi !" (sweets) and adults "support me !". If he refuses they can get angry "what's your problem mister !". I saw a small school, financed directly (not through official channels because of corruption) by a foreign lady, to offer some education to the children. One has the feeling some areas mainly rely on foreign support, people there aren't used to self-reliance ... (Edit: i haven't been to the cities). I hope conditions will get better in the middle east, climatically it could be a flowering area. In my eyes education is the key to a better life, but that takes at least a generation.

The presentation mentions how they finance it. SpaceX is not after the direct money with this project. But it's still a few years ahead, let them find the cause of Falcon 9s second stages anomaly first ;-)

That's most probably an acquired civilisational behaviour, and the view on others as belonging to humanity or not changed often in historical times. Romans where extremely tolerant (persons from everywhere could make carreer in the military service), spaniards not (conquista killed everyone who wasn't catholic). At the end of the last century it looked as if we had overcome the differences of skincolor. The lates news wake some doubts. I doubt that seeing others as "people" or not is an indicator, it changes too rapidly. Imagine humans in the savanna or later ice age mostly wandered in small groups, a few dozens, last hunter gatherers in the magdalenien maybe a few 100s. Small groups are likely to risk inbreeding, so when groups met they rather performed some form of ritual to chase away the "bad spirits" and interchanged people and information. It probably rather was a joy to meet another group in the wide open. The work of ethnologists in the last century supports that, they had the chance to visit the last "primitive" peoples. True, but is the principle "grab it before someone else does" a recently acquired behaviour or was it always like that, since the first humans wandered about. Primitive tribes valued the environment through rituals (see: shamanism), and i think we can assume that a similar thing existed in prehistory as well. It is impossible to prove, there are only hints from ethonological observation and archaeological findings.

It comes, as said, with competition. Be it shortage of resources, money, might over others. It is more a state of the mind, culturally induced or an outcome of personal experience/education than a built in thing. Not everything is controlled by the genes ;-) But i must object to one thing: it's not allways the physically strongest that comes to reproduction, it's more complicated. Many other factors apply, beauty is a relative thing and there is more about attraction, a smell could signal the compatibility of genes or past experiences from earlier years have a strong influence on the choice of partners. By "nature" humans are extremely good in co-operation, that's what made us spread all of the world. Over 2,5 million years tribes rather had to co-operate than compete. "Naturally", i would say that people are rather peacefull since co-operation is far more successfull than competition. Sociapathic behaviour is an outcome of property, shortages, and pressure from population, an individual thing. And that's is what the archaeological record strongly suggests, intraspecies violence seems to be an "invention" in conjunction with early settledness and shortages. Today it's all about exploitation of ressources, be they human, natural. monetary or technological. Our species does not care for the next generation (any more), they become competitors and usually leave home when grown up. See for example the oil price thing: just to keep prices low and drive out competition the gulf states pump out the ressource that fuels our lifestyle with ever greater acceleration, without regard to the outcome. So to your question: the problem is not part of our nature but acquired through civilisation. It exists since early history but early history is very young compared to the presence of humans. Will any person give up might .... example: O. from the West will, P. from the East not. It's an individual state of mind or whatever, not built in behaviour. :-)

Well, it would be possible to create an extra window with instruments and flight data, to let the game run in a low-res window and the instruments/data in another hi-res window. Old school simulation programs did something like that. But that would mean to program the whole ui stuff new. All of us who are used to see flight data (navball, ker data) in the game window would be irritated. Docking, landing and anything that needs an eye on the flight path and data simultaneously would be more tricky.

Thanks, i'll tell them :-) But then a few more guys here will be unemployed and could start to do silly things ...

I see. Only the (parallel) forces of the gravitytional field. How boring ... :-)

Hi, so, only forces from an outside gravitational field influence the CoG. My assumption that forces from the body itself like thrust, moving internal masses influence the CoG is wrong, correct ? I should know that by now, but i'm not ashamed to ask :-)

Well, technically it is most surely not necessary. I deducted from your questions that you don't consider so much to track that error down. I personally wouldn't install new, i'd take a look at the different logs to draw the circles ever more narrow and in the end i'd see where the error is. Or i'd or revert to the old driver if no error could be found or it would take too much time. But since we do not even know how you installed the new driver and you didn't care to tell us, a new install is probably the fastest and most frictionless procedure :-)

Oh, yes, there is. Meat, Milk, Cheese, Butter (got better in the last years). Farmers in western european countries are highly subsidized. "Butterberg" and "Milklake" have become famous words. Millions of tons af food are thrown away. Here on La Palma are Banana plantations. But they cannot compete with southern/central american prices, so the state guarantees a high price. The bananas are produced, bought by the state and then thrown to the garbage. More and more plantations are built until water for irrigation is getting short, which is just about to happen. That's the way ... :-/

Step on a village square in central africa and repeat that. You are likely to be asked some uncomfortable questions (i was). We cannot explain to the poor people why we destroy mountains of overproduction and on the other side people starve. Sorry, no offence meant, about a billion people are hungry, UN statistic of 2015. Mostly in developing countries, but a few live right among us in the rich countries.

Do i get this right ? CoM is an attribute of the body. If you hang it at the CoM without any forces applied it should be in equilibrium. Now if you apply forces to the body the CoG comes into play. If the resultant of the force goes through the CoM the body will move in a straight line, away from the force. If not, the body will start to turn and move, the CoG will shift with the resultant of the applied forces and the body, with it's CoM, will follow that movement. CoM is usually fixed, in case of a rocket it moves with the loss of mass. Without forces CoG and CoM are identical. With our rockets we applying forces in a directed manner using thrust/gimbal/SAS/RCS to steer the CoG around the CoM to set it on the planned course. Edit: I got that wrong. That happens when one expects things to be more complicated than they actually are :-)

What steve_v said. If you consider re-installing than that is probably the easiest way ...

I see ... in this case i'm one of the Titans (Titanians ?) :-)

http://www.nature.com/news/earth-s-days-are-numbered-1.13788 A discussion (not a paper) on the stability of "habitable" zones around stars. Habitable zones are not stable as the star matures, a possible evolution has to be quick to produce something intelligent, conversational, fermiparadoxwise ... :-) Earth surely did take its time for that to happen.

Yes, if there were traces of life on other bodies the question "where are they" would receive a new meaning. That would prove that life(tm) could emerge multiple times in a solar system, not in every solar system but in those that offer the right environment, the filters apply later. Mars is within the zone where liquid water could exist (lwz), aka "habitable" Zone but i hate the word because it only describes one of many constraints. A lot of asteroids are in the "habitable" zone. Venus is probably too close (see earth) and life in a cloud layer is too much science fiction for my poor brain :-). Titan, if it was in another system, would not be considered in that zone when viewed from earth. I miss Mars here, because of two reasons: First i doubt that other bodies than Mars or nearby asteroids are within our reach (for a probe complicated enough to search for life(tm)) in the next decades. Second if looking for habitable planets in other systems a planet like Mars would be easier detectable than a moon like Titan, thus if we knew if Mars once had microbes we could project that knowledge easier into other systems. The moons of the gas giants just have more constraints to take into account, like tidal forces and radiation from the planet. Or, in other words, we already have enough difficulties identifying the lwz around another star, identifying one around another gasgiant just complicates things. So i hope somebody goes to Mars and takes a closer look.

Might it be that you confuse dobsonian telescope with newtonian telescope ? A "dob" is a newtonian telescope mounted on a simple rockerbox, a 2-axis device (yaw and pitch for us rocketeers :-)). Newtonians are used for photography, but then are mounted on an equatorial mount.

See MaxPeck, or to say it with a bit of correctness: if budget is low but you want a big opening and an easy ride into the countryside then a dobson is a nice thing. 10kg and 200mm (8") aperture. But i know of no-one who does photography with a dobson. That stuff is rather 35kg (plus battery) for 115mm aperture :-)

Did a few tests yesterday with my newly acquired used camera but had to give up because the wind was too strong. Just had a chance to realize i had a small drift, just a few pixels per minute. Probably not exactly balanced setup and/or battery dropped below 12V. More tests necessary. Right now there is a steel blue sky, a foehn-wall is standing over the ridge and 60km/h gusts tear at the satellite dish. But the wind shall drop they say ... @MaxPeck, do you use an autoguider ?

In theory, yes, there is overproduction of some foods, those that are subsidized or subject to political control. Bananas on La Palma, butter and milk in germany (and elsewhere) are destroyed to keep prices high and people employed. But in practice too many people in the world starve and the problem is getting bigger when food production has to compete with (highly subsidized) fuel production.

That is one problem, monocropping (canola fields) in northern germany already lead to duststorms on motorways (and crashes). Rainforest is cut down and moors are dried, areas for food production reduced because of subsidies. Many see the damage to nature by biofuel as much greater than any possible benefit. Also biofuel is more aggressive than mineral fuel to seals and lines. A slightly higher risk for engine failure is not a problem for a car, but surely for anything flying. So engines would have to to be adapted to use biofuel. I think airlines are about to adapt to biofuel. Biofuel for rockets ... ISP would suffer, i read the energy density of biofuel is not as high as mineral fuel ... needs confirmation.

I could only tell you about the disadvantages, but if it the price doesn't hurt or you're limited to <100 funds then do it. Things that could reduce the experience: - azimutal "mounting", must steer in two axises manually which can be frustrating, fotography only rudimentary possible - plastik mounting probably either has built in "tolerance" or if screws are tightened can only be adjusted "digitally" (jerks), seems to have no fine adjusting knobs - probably difficult to attach accessories, only suitable for eye-viewing (- focal ratio 11, dark picture; 90mm aperture, small picture) There has been a similar question with a tight budget just a few weeks ago here in this forum, there people advocated something like a used dobson ... Edit: I see that for 10 funds more there is a version with an equatorial mount (metal ?) of the Astromaster 90. If you could get a grip on that one you'll avoid half of the disadvantages ....

err ... eh ?

Arugela, no need to get angry, steve_v tried to help. The information you provided us is not sufficient to track down the problem. If you start KSP from a terminal you might see an error message, that is why steve_v asked you to do that. Also there are a few standard problems that could be ruled out by starting the program from a terminal with launch options. If you don't know how to do that just ask, there are a lot of people here who can help with the handling of your os. Maybe we can say more if there is some sort error message displayed. What i see from the log: pls try again with AA and Edge-Highlighting switched off.