Pascal Koiran's wormhole

One Pascal Koiran poasted something to the arXiv 9 October - a banner time for Stuff Bagestan Missed. We're hearing about it on the Drudge Report so, it is everywhere now.

The notion is to travel between two spaces in spacetime without reference to the speed of light. Einstein (and one Nathan Rosen) proposed that, yeah, relativity allows for the exit from this universe - black holes, and such. The trick is to reënter this place - the fabled "wormhole". Karl Schwarzschild noted that when you enter an event horizon, your time slows down outside the horizon such that you're not getting back into this universe ever. To reënter is, then, equivalent to the existence of such "exotic matter" as has negative mass, negative entropy, "tachyons" - whatever. It doesn't exist, therefore it's nonsense.

Ah maybe the Exotic can exist if only it be buhleeted out of existence, before you can catch it, by quantum physics! Sure, this field does allow for (and demand) particles to flicker in and out of reality. Like those W and Z bosons mediating the Weak Force. But it says nothing of "exotic" particles rather by definition - or they wouldn't be exotic, would they?

Anyway, it seems Schwarzschild isn't the last word on the topic of how to enter a (VERY THEORETICAL) wormhole. The time variable can be rethought in some "Eddington-Finkelstein metric". I don't understand it; maybe you can understand it. I assume it's still only good for data-transfer.

Leaving the universe and coming back to it would also violate causality. For some DUST episodes relevant here we could look to "Atropa", "Hyperlight", "Alone" especially and (lately) "Recoil". Overall I do not recommend the process although those stories are pretty good.

Liao

I've seen Robbeets knocking around for about a week now. I didn't really want to mention it.

The notion is that the Altaic family is real: that Japanese, Korean, Manchu, Mongol, and Turkic form the same family. Branching from the Liao basin 7000 BC or so. Note: long before Old Indo-European including Tocharian; more like same with the Anatolians added in.

Except that there's no analog for the Hittites who'd given us that Bronze Age checkpoint. It would be nice if Shimao had a literature but it didn't. We don't know what the Tarim spoke either, before the Tocharoi and then the Sogdians showed up from, you know, way out West. I'd long thought we knew but we didn't.

My thought is that the steppe languages comprise a Sprachbund: nomads learnt just enough of the farmers' languages to converse across the steppe. Even if their languages adopted a lot of their neighbours' vocabulary and even sentence structure, like Coptic with Iranian and then Greek, or like Etruscan with Italo-Celtic; still, these remained recognisably not Indo-European to the end. Pending a Shimao archive that remains my thought on "Altaic".

TOLJASO 6/14/22: It's bunk, time to dunk it... into the junk.

STL4 is cursed

So is the Sol / Terra Libration 5, for that matter.

This blog has noted a theory that Theia came into an Earth-crossing trajectory from outside. I find an earlier theory: that it was our very own Dopple World. Theia had come in from a libration point - a stable one. In theory (well, per Sean Raymond theory) libration-haloes may own a mass up to the mass of what they're librating against, and stay stable. If greater than Earth then I suppose Earth would be the librant, not the librator, if those be words (need 24.96 times difference for stability). Certainly Jupiter got plenty of "Greek" and "Trojan" asteroids fore and aft. Down here at 1 AU, eventually something moved Theia and Earth out of mutual stability.

The overall theory came from Edward Belbruno and Richard Gott, who came up with Theia in the first place; the Lagrange side of their theory - their Just So Story - was their best idea at the time for "okay buddies, how did Theia get there in the first place". They didn't make a big deal of it, since it was hard to explain and it existed alongside obvious other options like "it got whacked from outside". They figured Venus and Jupiter, also forming at the time, as the perturbers. UPDATE 6/19/22 - Not calculating inter-Dopple tides.

Amarante, Winter, and Tsuchida in 2013 couldn't find how Theia could even form 1 AU from our Sun, such as not simply to enter Earth at the time. That killed the sub-hypothesis such that "outside" was the last one standing. The libration-formation notion accordingly has been forgotten about; but it's important for the history of the thesis, which central thesis is as solid as early-system dynamics get.

One major issue with the libration theory, I think, is that it was falsifiable. We should be seeing more planetesimals in STL4 and L5 [ed. that don't raise tides] than we do - which, as far as ProjectRho will tell me, consist of "Kordylewski clouds", which I cannot even enunciate let alone describe. The closest we get are these weird pseudomoons like Cruithne and this fragment "Kamo'oalewa". Which fragment is Lunar anyway, a "tectite" as we call them when they land upon us. As I suppose we should expect, because the Sun's pull down here makes difficult for asteroids to get captured directly into such haloes.

So: why aren't STL4 and L5 even homes for capture by tectites? Well: Belbruno and Gott have that answer. Venus has settled in 13:8 resonance with us. It follows that, even now, there doesn't seem room in Earth's orbit for a stable satellite in its haloes. tl;dr - Earth has no haloes and, like Ganymede, isn't Lagrangian.

Which is not to say we can't have a short-term floater around Lagrange's points, but long-term they will need station-keeping just like John Norman's antichthon.

As for Venus' Lagrange-points, I dunno if they be libration-foci. On the one hand, Earth might have even more of an effect; on the other hand - the sun might enforce more stability. Venus might not have rubble in its haloes simply because there's no moon there for rubble to be placed into a convenient trajectory. Asteroids as fly by Venus tend to fly faster even than they fly by Earth.

Axiom: a proposal

h/t Cerno, Axiom Station. It's a commercial station in orbit: nearly double the useable volume of the International Space Station.

My only suggestion is that they run this thing not in LEO but between the Van Allens, like 2.5 R_e. Per Baker 2014 I'd strongly suggest not scraping the inner edge of that second belt at 3 R_e.

Starship allows for freight-transfer direct to a station between the belts, where LEO was somewhat stuck taking whatever it could get. Also: less space junk; and what junk there is, goes slower. And that orbit is closer (delta-V-wise) to everywhere; and you've already cleared the inner belt's rads.

The website is looking at 2 years, 41 days for Hub One [CORRECTION 11/18: the earlier poast had "98 days", that's for the Ax-1 to the ISS]. Seems like it's to beat out Northrup's HALO, which last I looked was selling to Gateway, which ain't gonna happen.

Hot shot

Since I'm coming up to booster time I am checking the vaccine adverse event reports, aided by @AetherCzar's tutorial. First EWD153, then EL9264; both Pfizer/BioNTech.

EWD153 turns up very few events: "all doses" come up to three (3), and if you only had one dose then that's just one event - ever. EL9264 by contrast looks ... hot: 713 events. Of the latter events, fourteen people who took that jab died soon-enough afterward their survivors reported it to the system.

I take it that "events" does not mean "jabs"; the report includes as percentage the event-count against 713. It's confusing and unhelpful. I mean, unless you want to terrify such normies as get a little under-the-weather and think "OMG I HAVE A 2% CHANCE OF CROSSING THE STYX". In general the "Caveats" section exists for a reason.

On the other hand, it may be that EWD153's lowball is an artifact of it being early thus usually followed by another jab only four-six weeks later. If followed up by whatever lot, any adverse-event (from whatever source) will be blamed on the second shot.

Still: EL9264 was better than ER8727 which came with 2291 events with thirty toe tags.

Ganymede protective service

As in mythology, so in planetary physics: Ganymede is abused by Jupiter, and needs to be protected. This project does that.

I got the germ of the idea Monday when I ran across the proposal to shield Mars, from our Sun. The next day, I plotted out the skeleton of the project and scampered around for references and data; in so doing, I critiqued the gaps in the Mars project. Wednesday was my day for starting on the mathematics, mainly for the microteslae; and for fixing the MANY errors of my initial draught. Thursday, the Armistice, proved not as productive as I'd hoped, since I'd spent the morning at church and then doing some (paid) work I'd had assigned to me Wednesday night; although, I did get the volume of the coil we need. Yesterday I was like, why not sketch out how to get that mass over to that iceball, which the original (Martian) project had not done (because on rock-cratered Mars they didn't need to).

Blogger (and Wunderground) being blocked from me over the most-relevant three days did NOT help; although this resolved itself as of this morning.

Meantime, I note that my Academia page had not got around to some early April fixes to the cycler projects, both the errata to the Earth/Mars tables and the "2L4" Venus-STL1 cycler. I reckon by then I'd just gotten burned out. So those fixes are in, belatedly.

LANDING 12/9/22: there's chatter that Europa may have sites as don't get Jovian radiation; which means Ganymede has such sites as well. Still: I'm here to talk about the whole globe. For instance getting on/off any airless and tidally-locked world at the Hohmann implies the antijovian or projovian points.

Henry VII in Newfie

This coin was minted in the middle AD 1490s. Within the half-decade of Columbus' landfall in the Caribbean. John Caboto only got to that coast in 1497 - under, yes, Tudor colours-with-a-u.

It is not in scope of this blog if the New Found Land alias Markland be "Canada" but, this blog does count all the coast with the Brave New World, across the icy Atlantic.

The actual colony would be founded in 1610. What were they doing with a coin over a century older than that? The Mail notes an AD 1561 coin at the same site so - an English patriot and coin-collector (or more than one) staking his claim upon History, one might conclude.

It may be, though, that there was already a trade in British silver with the natives, for furs, which furs were well worth their proverbial weight in silver back home. So, when the colony was established, those natives might have traded some of that older silver back to them, for more-perishable commodities, like 1600s-era rifles. (1500s-era guns being famously inferior to a good stone-tipped arrow.)