Green Baron

I'll bite as well : really, lumping together geodynamics and a tumbling aluminium can doesn't address neither problem :-) Ok, i once read about the entry corridor for the return of the Apollo missions and how they performed several maneuvers to narrow it down from several thousands a few hours before to a cone of a few miles in the final minutes. Y'all know that better than i do. A low orbit takes ~1.5 hours, distance travelled is >40,000km. To calculate the precipitation :-) one needs an atmospheric model through all the altitudes including air densities and compressibility as well as the weight and the aerodramatics of the can. There are several models for the first, but the latter depend on weight, the cross section to the flow, density and speed. A small change in either of these induces a change for rest of the trajectory. Is the tumbling chaotic ? When do parts fall of and how does this change the other quantities and air drag coefficient and so on ? I doubt this can be calculated, you'd need additional info like how corroded are things and so on. Impossible to obtain. So the error and the cone of travel remains big and long. It seems to me that giving more hints than a rough estimation of the geographic area a number n of orbits before the fireworks is reading tea leaves. So we'd have n * 1.5h of pre alert time to prepare the photo apparatusses :-)

"Sunlight bright upon my pillow ..."

I can only find magazine articles about bacteria outside the iss. One called OU-20 from the village (not a bottle :-)) of Beer claims to have been an experiment. But since there are apparently no scientific articles about it (and i'd certainly expect one) it might be just temperate air as it is not clear who collected what when and under which circumstances and can it be excluded that they weren't just "imported" or sneezed out ? That would be the kind of information i'd like to read. Stuff sent up to the iss isn't specially cleaned (i think), so there may be trillions hanging on a supply ship's outside.

The Nasa text says the 44km/s is the speed now (at observation) a little above earths orbit. That is, if i am not wrong, 2km/s more than escape (parabolic) velocity. But my math knowledge is limited :-)

It can happen to the best of us ;-) I am sure he meant a 100,000ft (~30km), that is balloon altitude and in the stratosphere. I have heard of microorganisms higher than that but i can' remember where, but of course they come from earth, not from space. "Normally"there is no to little exchange between the tropo- and the stratosphere. On rare occasions (extremely developed cold fronts, volcanoes, idiotic nuclear tests, maybe tropical storms) material from the troposphere (usually full of microbes) can be transported into stratosphere. Earth's biosphere apparently does not have an abrupt upper limit. That's where i would start to search .... but i can be wrong.

So, @GarrisonChisholm, don't give up !yet Resist ! :-)

No ! Lens paper is nice for hard coated surfaces, but not for a telescope mirror. Store it upside down so that it doesn't collect too much dust. Ignore dust. If you can't resist then here's one of many instructions. @_Augustus_ manufactures telescopes, trying to tag him. @Ultimate Steve has a dirty mirror ....

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

Yeah, the guys at nasa might have been taken away by their own minds :-)

This, and shouting out "life" when there are traces of water is a little lurid. Science needs a factual basis. H and O are abundant, but the whole "life" thing has still to be proved, NASA doesn't mention life in the linked text, they don't want to be ridiculous. It is not really news that water is one of the main ingredients in all of the bodies in the solar system. It is a long way from self replicating chemistry over microbes, complex monocellulars, multicellulars, and whatever might come after it. Do comets host life ? Edit: btw., since nobody who knows a little about minerals will find the op surprising (except the claim that there might have been an ocean which is at this point hard to follow): earths mantle has several oceans worth of water, enclosed in its various minerals. The mineral water plays a big role in keeping the whole thing ductile because it lowers the melting point (lowers the solidus temperature), thus playing a role in enabling plate tectonics, thus adding to the probability of the forming of complex life. The study It's interesting ;-)

As a side subject palaeontologist i would probably die of boredom on mars if i had not done so on impact. I would probably prefer to actually have died on impact since there is nothing to do there. At least nothing which i am good at. Oh, i am good at doing nothing, but not for 500 days.

I am one of those as well (20GB/month for 50 funds). I live in a rural area on the western flanks of La Palma island. The villages have DSL and the town even (since this year !) a fibre-optic connection via sea-cable to the mainland. There is a new offer, terrestrial Internet up to a central antenna, from there over the valley to dishes at the households. I tried it for 2 weeks, then switched back to satellite. Page generation is much master but bandwidth for downloads were even worse than satellite and fluctuating. Also their router switched IP addresses every now and then which interrupted downloads. Via satellite it sometimes takes half a minute for a complex page, mostly waiting for timeouts. Fortunately i could rent the dish for a few (like 3 or so) funds/month. It's a drag and a perfect reason to complain about.

I am not a programmer and it has been a long time since i last did C programming. But if you send me (or post here) a specification of what goes in, what goes out and what to do in between i can give it a try. Just no fancy graphic i/o, please :-)

"No escape from reality ..." You've made it. You planted my earworm for today. *whistlingkerbal*

Then it would be mostly constant, which it isn't at all. It stems rather from a dynamo in the liquid / highly ductile parts of the outer core. The dynamo is (most likely) driven by convection, caused by heat differences in the inner core that causes the overlying masses of the outer core to "do the twist". This model also explains well the sudden (geologically ...) changes in polarity or even multiple poles (speculative). The first link i found: https://websites.pmc.ucsc.edu/~glatz/geodynamo.html ... and others.

Via EM induction you mean, a moving conductor in a magnetic field ? Problem is to get it down. And it won't be enough to light a village. The best renewable energy source is indeed the sun and we know how to convert the radiation into a current and how to store it, charge the car, cook, etc. Depending on insolation. Edit: supposing we could get an asteroid in an earth orbit; will the asteroids orbit decay due to inductive forces ? Like i have watts and the neighbour a crater ?

Wow, @richfiles, thanks ! Didn't know that with the tape meter, technical details of a foreign language ;-) Never heard of the Epson AP-200. Duckduckgo doesn't show links either. Rare part apparently ... is it only the drive or the whole computer ?

Maybe i can help here: Try duckduckgo. Less noise than google and no tracking (they say). Hmm, i have problems too here. Where do you see the link between tape and meters ? Do you want to know how long the storage tapes of the mainframes were at the time ? Well, either Epson or Apple II. Distinct things, the Apple ][ was a desktop, Epson had/has a reputation as a printer manufacturer. Afaik Epson didn't have an Apple ][ clone ... i think. If you can specify what you're looking for (like "interface" or "parallel port" or "rs232" ...) you might be more lucky. Now i have the sound of a needle printer in my head. Shall i post this in the earworm-thread :-)) ? Can't help with the density display, though, sorry ...

People in Skyrim cry out the fire with collective "1-1-2" cries ...

Not really. The outer core is liquid but no ocean and afew percent of the Asthenosphere are liquid. Ductile describes it better.

Well, if i have overseen recent publications i'd just be happy to know ...

Hi, i am trying to find a source for the water and iron thing ? I understand that the names are your inventions :-) ? Do you mean the hydrogen escape, this ? The speculation about liquid water out of a possible measurement of hydrogen in the exosphere is really far fetched i think, hydrogen is everywhere. But we live in these days ... :-) Must wait for the bf telescopes ... :-)

I feel tempted to add that the article's relevance might be small at this time, since the composition of the planets is unknown as well their rotation. Even their sun's magnetic field is unsecure, afaik it is not clear whether a strong magnetic field is an attribute of red dwarfs in general. The paper.

I've voted. Hmmm ... i had to smile when i saw a 37 complaining about being lumped with a 25 year old :-)

First part is true imo, but we do have quite reasonable explanations for the causes of the carboniferus/permian glaciation, for example a supercontinent in the southpole area cut off from global circulation, Antarctica XXL sotosay + glacier dynamics + atmospheric composition + albedo change ... True. But finance is driven by statistics of what the masses run after today and by shifting a humongous amount of depth into the future. This isn't exactly a sustainable technique for a species, but nice for a month long reporting term. It is extremely short sighted and reality frequently disrupts the folly and will surely do so next time. Concerning climate and its change, ice retreat for example is accelerating even faster than the worst estimations 20 years ago estimated. Maybe the coming months will produce some work on ocean warming, i doubt its looking better there ...