Green Baron

I'd paint a few clouds around it, just below the fins. To give it a more heroic touch ...

I'm sure you meant 1753, didn't you ;-)

Isn't an allergy an overreaction of the immune system, to substances or environmental things that "usually" are harmless ? While a poison rather disrupts more or less vital body functions, and is "usually" harmful ?

1741

I wouldn't :-) Seriously, metamorphic rocks are heat/pressure transformed sediments and volcanic rocks. The were brought down into the crust (or a little below) by subsidence or in subduction zones, and subsequently uplifted again for example in an orogeny (forming of mountain ranges) and then start to weather out. The "metamorphic facies" describe the conditions and outcome of rock metamorphosis, depending on the original material. These processes are impossible to replicate on asteroids, they lack the necessary temperatures and pressures and collisions are too short for the minerals to form (though we find on earth shock transformed minerals that resemble those from meteorites (and thus probably asteroids as well). Metamorphic rocks rarely contain many organic compounds, unlike some asteroid surfaces. Sediments are weathering and erosion products that form out of volcanic or metamorphic material through physical and chemical processes. Water, wind, ice, atmospheric chemistry, gravity play a role and in a much greater scale crustal processes like uplifting. No uplift -> (almost) no erosion, otoh subsidence -> deposition. You won't find these things on asteroids, maybe superficial different "weathering" products that formed through billions of years of particle bombardment and radiation exposure.

True, the processes that form the rocks on earth and possibly other planets do not exist on asteroids. Roids can be classified by the spectrum (spectral classification), which depends on the type and composition of the surface material. But as the earth is in principle formed from the same stuff, it is no surprise that we find minerals there that closely resemble those from the earth's mantle (olivine, pyroxene) and core (iron, nickel), as well as crust (silicates), in different parts on different types of asteroids. And of course carbon, hydrogen, oxygen ...

I spent several hours today calculating normals for shading purposes in several ways. And so: Mike Oldfield, A Trick of the Light

I only hail the probe.

Cool, thanks:-) Is there a towers of Hanoi dance too :-) ?

Too many things happened in 1721, so i revert to an innocuous train pic of narrow gauge trains in Switzerland. Where snow plows carve a way in winter (if there is snow).

Sure, my remark was on @kerbiloid's hint to the onset of agriculture some 10.000 years ago. He pointed to the fact that humans spread all over the earth long before that, and to the fact that with agriculture and division of work we have clear evidence of intraspecies violence among humans, while all cases before (from the paleolithic) can be attributed to for example hunting accidents. This is all long before bronze (Greek) and iron age (Greek/Romans). Anyway, off topic and nothing new at all.

I like open landscapes. New Horizons is in conjunction with the sun, until ~11th. No comms until it peeps around the sun's edge again. On second thought, the encounter happened quite close to this ... phew.

Cool ! A Minox from the 30s. Famous movie spy camera (and for everybody else who could afford it). I once owned a used Minox 35 EL. It sometimes had problems with the film transport mechanism, iirc

At least it is not riveted :-) Statler, let's go

It is not mine. It is his. Since 1667.

I swear it didn't work yesterday, but it does today ...

@IncongruousGoat, do you know how floating point 0s are represented ? Wikipedia fabulates sign as computed, exponent and mantissa 0. But at least in GCC/G++ this is not the case, when float 0.0 are cast to integer they have (big) values.

... because J. Kepler's book Astronomia nova is published ! Begone with geocentrism .... hush !

The latter is a sad reality ...

Generally archaeology tends to see it that way. One can indeed imagine that for the contemporary mesolithic groups living alongside with the "Bandkeramik" settlements in central Europe there were few reasons to adopt the new way of life. People had to work much harder than hunter/gatherer groups, it must have smelled in the "thorps", folks there generally had bad teeth from corn rich nutrition, traces of infections are found on bones, skulls, teeth, and sometimes they even beat each other up. But once that way of life starts, there is no way back. Population grows, and work draws work after itself, no time for questioning and every hand is needed ... scrub that, don't cite me :-) But it is different in the area where the story began. There the change took thousands of years and each single step was not visible during a human lifetime. Life changed too slowly (yet ever faster than before) for disadvantages to be visible. So, maybe, folks just slipped into it. Proposals for explanations of the "why" are still welcome, the "how" is no mystery. Be it as it may, "paleo" can't be defined in a qualitative way, that's where these things get a little "smelly", as if somebody searches for an explanation in mystery where there is no hard data to support his/her view. Which leaves these things more to the realm of "belief" than hard data driven finding. Imo.

I've actually had one such contemporary in my halo of acquaintances ... ... well, one shouldn't talk bad about absent people

Well, we have quite a good picture of what people ate through the times, from direct material remains over landscape reconstruction, pollen analyses, residuals, charcoal etc. to stable isotopes. Naming something "palaeo" and sticking a sciency looking badge on it is a modern way, it is more an expression of our own culture than an ancient way of life. Normally, in most cases, it doesn't harm if we omit things from our diet. It is still diverse enough for us omnivores. But in combination with other individual sicknesses, inabilities, deficiencies (that i don't have the slightest idea about) things may be disadvantageous for a given individual. There are specialists around for almost anything, it is never a mistake to consult them. If they don't know the answer then it may well be that there is no answer (yet). Some sicknesses, infections, viral mutations just happen statistically. It's biology :-)

Nope, the spherical shape is not through their own gravity. They are much too small.

Much too small and not dense enough for higher gravity. Collision speeds out there are in the range of km/h, maybe 10km/h.

I am not a specialist, can only offer basic thoughts. From what i read the processor isn't that much faster than your old one but has more cores. If your not using heavily multithreaded stuff there will not be much of a difference. A better graphics card could help speeding up graphics, may be a gtx 670 or so ? Limiting components these days are seldom the processor or the graphics card in itself, but io related things, memory access, bus speed etc. If you have slow memory and a lazily spinning hard disk, the best processor would starve waiting for data to do things with. I'd wait until i can afford a complete newer machine.