1
I've been seeing those 1" cubes in a lot of videos lately, I wonder where they come from?
There's also a 4" Tungsten cube that's been making the rounds of the GunTubers and others.
Posted by: Mauser at Mon Nov 30 00:10:11 2020 (Ix1l6)
2
Search for "density cubes"; they're all over Amazon, eBay, Etsy, etc. I think they're for teaching ranged combat to homeschooled kids. :-)
-j
Posted by: J Greely at Mon Nov 30 00:46:49 2020 (ZlYZd)
3
My mother works at a place called "The Institute for Physics of High Pressures", which is basically centered around a giant press. They were the first to make synthetic diamonds, long time ago. These days they're trying to create a metallic hydrogen. Basically scientists were so preoccupied with the question if they could, they forgot to ask if they should. Metal hydrogen is not a quantum state, so who cares? Maybe they should start a Youtube channel too.
Posted by: Pete Zaitcev at Mon Nov 30 00:51:39 2020 (LZ7Bg)
4
A friend of mine, Rex S., is a leading seller of some kind of "model cube". He was a teacher in a high school and started it as a hobby after he had a brain cancer and became unable to teach due to seizures. He was selling all sorts of garbage, like miniature steam engines, polished stones, and geodes, until one day he sold these cubes to some industrial place. I think he makes them mostly out of tungsten.
Posted by: Pete Zaitcev at Mon Nov 30 00:55:35 2020 (LZ7Bg)
5
I'm just sad that the earbuds didn't get tested too.
Posted by: Pixy Misa at Mon Nov 30 07:56:45 2020 (PiXy!)
We've discussed Apophis before, but not recently...we were still on Blogspot back then. Basically Apophis is an Earth crossing asteroid that someone decided to tempt fate by naming after an Egyptian god of destruction. In late 2005 there was some speculation that it would impact the Earth in 2036, but subsequent calculations indicated that was not actually the case.
Computer model of Apophis from Wikipedia
Now, in 2020, astronomers looked at the space rock's most recent pass and amended their amendment to their calculations with the result that they think this dollop of deep-space detritus has a 0.00067% chance of impacting the earth with the force of 1.2 gigatons of TNT in 2068.
This is not a high probability event, but if it comes to pass it is a very consequential, as a blast yield of 1200 megatons is a, shall we say, impactful, event no matter where on Earth it happens. Furthermore, this asteroid tends to have close calls frequently, meaning that in the long term, an eventual impact is almost certain.
The good news is that we've got plenty of time to mitigate this and try, fail, and try again to deflect the object and still have time to reflect upon and learn from mistakes made and lessons learned.
The Brickmuppet's Crack team of Science Babes begin training to take care of business.
For instance: The next time one discovers an Earth crossing asteroid, name it Fluttershy or Snorlax rather than after some ancient Egyptian god of chaos and death.
..13 Russian space probes are scattered across the surface, 3 reduced to cinders 10 crushed, melted and dissolved by heat, pressure and acidic atmosphere akin to that near the mouth of an underwater volcano.
"Our country [the Soviet Union] was the first and only one to successfully land on Venus,†[Dmitry Rogozin, the director general of Russian space agency] said in an interview with The Times. "The spacecraft gathered information about the planet — it is like hell over there.â€
"We believe that Venus is a Russian planet,†he added.
There are a couple of ways to take this affront to the Outer Space Treaty.
1: Assume it was said in jest. Take it not seriously at all.
2: Embrace this affront to the Outer Space Treaty and let them have Venus. After all. Given that precedent, we've got footprints on The Moon! Those flags were artesianally erected! It's an American Mercury sized spacerock!
Ahem. Then of course there's the matter of Mars, which is as American as Venus is Russian, and Titan, which using that logic is currently owned by Brussels.
This non-sequitur comes on the heels of a recent discovery that might indicate life on the hellish planet.
Now on Earth, Phosphine is produced in two ways. One is by chemists mixing white phosphorus and sodium hydroxide or potassium hydroxide, and the other is anaerobic bacteria, doing their anaerobic thing. On Earth bacteria are the only natural source so to see this gas in the clouds of Venus is seen as being a possible biosignature. Also, the gas is highly toxic to aerobic (oxygen breathing) life, it's only a signature of anaerobic life, which, due to the lack of free oxygen on Venus would be the only life that might stand a chance.
I only have a degree in History, so I'll let one of our crack team of science babes explain why skepticism might well be warranted.
A lack of oxygen is the least of the problems with life on Venus. The temperatures and pressures are far beyond anything even the most hardy extremophiles on Earth can endure. At the temperatures at Venus's surface, organic chemistry breaks down.
Venus dirt as photographed by Vega 13 moments before it imploded, and presumably melted and dissolved in the high pressure acid bath.
One theory is that the anaerobes exist high in the atmosphere (where the phosphine is). How the bacteria would fly/float 20-50 miles up is unexplained. While on Earth the only natural source of Phosphine is anaerobic bacteria, Venus, by virtue of its temperatures, pressures and highly reactive chemical soup of an atmosphere, might be pulling off chemistries we don't understand.
Indeed.
In an earlier post we noted that Vega 13 which took the above picture had detected phosphoric acid (H3PO4) in the lower atmosphere. In fact, at the lower levels of the Venusian atmosphere, Phosphoric Acid is in similar proportions to what the Sulphuric Acid is at higher altitudes. Phosphine is H3P. So in this crucible of ungodly pressures and temperatures, all that is needed to create Phosphine is somehow drop the 4 oxygens from Phosphoric Acid, note too that Phosphine because of its composition is much lighter and so would float up.
I'd frankly sooner expect glaciers on Mercury than life on Venus.
So I wouldn't completely rule out life in the clouds. Still, I think the non-biological explanation is more likely.
However,
This might still be big news.
IF there IS phosphine in the clouds at the human habitable altitudes and IF this isn't bound up in some fragile ecosystem, then a floating cloud base on Venus could filter out phosphorus for use on Mars and other places.
We mentioned this in the earlier post when looking for something that might make the proposed cloud bases. economically viable, though in that case we were thinking of pulling up the phosphoric acid from 20 miles down, which was a logistical matter we did not dwell upon. If phosphorus is in phosphine gas at the habitable altitudes then phosphorus extraction becomes much simpler. Phosphorus is pretty important, to the extent that assuming settlements on the Moon, Mars and in habitats, it could be the Dilithium, Spice Melange, or Vibranium of a real solar economy. Heck, with concerns about "peak phosphorus" it might be something from space that would actually make economic sense to have shipped to Earth. I don't know what processes or reagents would be needed to crack phosphine but it bears some investigation.
A lot depends on what concentrations this recently discovered phosphine is in, whether or not it's tied up in some unearthly ecosystem, and, in the unlikely event that it is, if it can be harvested in commercially viable quantities without destroying the biome that produces it. However as we mentioned in the earlier post Venus has 4 times as much sunlight as earth, 4 times as much Nitrogen, Calcium, and Phosphorus plus, Water and Oxygen can be cracked from the atmospheric acids. A hypothetical floating outpost on Venus as proposed by NASA in 2014, can mine Phosphorus and Nitrogen....and grow its own food, perhaps a surplus of food, and because breathable air is a lifting gas on Venus, the floating part is fairly straightforward. A exploitable source of phosphorus could be a huge boon for agriculture here on earth as well as make it much more practical to to expand human presence throughout the solar system. To that latter end as well, the nitrogen, of which Venus has 4 times as much of as earth would be invaluable in providing air to habitats throughout the solar system.
Brickmuppet Blog may not be the only outfit mulling over this hairbrained scheme. After all it was right after the Phosphene was confirmed to exist that the head of the Russian Space Agency declared the most inhospitable planet in the inner solar system to be Russian.
NASA's Project HAVOC which we mentioned in detail in the earlier post. One interesting thing that was noted in the report was that the light is so intense at Venus that solar panels can be put on the bottom of the floating station and sunlight reflecting off the clouds will give them better performance than those on Earth.
I Suppose Delta Airlines is Particularly Enthusiastic
We asked our Crackerjack team of Science Babes to report on the latest breakthroughs regarding the Flying V.
However, due to poor communication there was some confusion, so I'll just link to this story at Ars Technica.
Flying V is a type of aircraft that has been talked about for some years. In theory a Flying V aircraft with the same passenger capacity as a standard airliner would have about 20 percent less fuel consumption. The design has not been pursued until recently because that's only a theory and there were other theories that the design would just not get off the ground, or flip over and crash. Airbus rejected it, but the engineer who developed the concept hopped the border to the Netherlands and the idea was taken up by Dutch Airline KLM, who have built a scale model and successfully flown it.
Theres a concept video on YouTube...
...which is WAY more impressive looking than the actual event.
But the test is not CGI. It's actual engineering. There's more on this at New Atlas. Which notes that the baseline for the 20% fuel savings claim is the Airbus A350-900 and that unlike most flying wing proposals, a Flying V would have the same or smaller wingspan. This would solve the achilles heel of most flying wing airliner proposals, the notion that airports would have to be massively rebuilt for the new planes. With this they wouldn't.
All this assumes that the thing actually scales up well, which is far from a sure thing. Still, it's nice to see innovative and frankly futuristic looking designs being looked at...it being the 21st century and all.
Once finished, the robot will feature an incredible 24 degrees of freedom, meaning this thing will be able to walk.
The thing is supposed to be fully operational by October, and while its schedule was thrown into chaos by CoronaChan, it appears that they have now caught up and an October debut is a real possibility.
1
Just as long as it's not the future where a space colony is crashed into Sydney.
Posted by: Pete Zaitcev at Tue Jul 28 14:56:53 2020 (LZ7Bg)
2
I'm sure that if any space colonies declare themselves to be a ArchDuchy, Pixy will move.
Posted by: The Brickmuppet at Tue Jul 28 15:20:56 2020 (5iiQK)
3
Given that a couple years later after Operation British, yet another space colony crashed into North America...Maybe Ace's much touted 'Sweet Meteorite of Death' will actually come true.
Incidentally, one positive thing that happened on Youtube this year - they started officially posting the soundtracks from the various Gundam titles the same way they post music from labels.
Posted by: cxt217 at Tue Jul 28 23:29:44 2020 (4i7w0)
1
That's really cool, and undoubtedly a lot more fun than climbing a ladder. But you can't carry much if any gear with you, any hostiles would have great fun shooting you out of the air, and I can't imagine those things are much good in the foul weather/high seas that go with a lot of Coast Guard activity. But as a way to get the first person aboard to evaluate a situation, perhaps take the helm, receive a messenger line, etc., it could be quite nice. I'm not sure about inspections, you'd have to take the gear off and leave it on deck while you poked around.
Posted by: David at Sun May 24 13:30:10 2020 (UmjNG)
The planet has an anomalously large percentage of helium 3 in its clouds and a bunch of cool icy moons which seem quite comparable to Ceres.
The system is far enough out to keep the pesky tourists at bay.
Interestingly though, Matter Beam's article has an idea for a potentially interesting "killer app" that could make the the two "ice giants" quite useful in the far future.
Scientists examining a meteorite think they have discovered a protein inside it. This is significant because, while amino acids have been found in space rocks, proteins had not. The researchers are reasonably sure that the protein is not due to terrestrial contamination due to its isotope signature and the fact that the protein is like nothing ever seen before.
The hemolithin protein found by the researchers was a small one, and was made up mostly of glycine, and amino acids. It also had oxygen, lithium and iron atoms at its ends—an arrangement never seen before.
"Hemolethin appears to be a new word invented just for this protein. but that's not NEARLY as important as the validating fact that one actually CAN find protein in space!"
1
Extraterrestrial proteins being discovered at exactly the moment that a highly infectious virus is sweeping the globe seems like excellent grist for grade-Z science fiction movies.
Posted by: Canthros at Sun Mar 8 22:54:34 2020 (mToqK)
A Few Viral Videos (Updated)
Ben Kavanaugh, An English-teacher from Ireland goes to buy groceries in Wuhan.
The bit about the goggles is probably good advice.
This below seems to be the full version of "The Nurse's Video"; the video that caused much of the online hysteria yesterday. Epoch Times has a slant to be sure, but they don't (to the best of my knowledge) make things up whole cloth. It's unclear why she would give the interview in a hazmat suit. I don't know who she is and even if I did I've seen enough Downfall parodies to know that I'd want someone with a good knowledge of Mandarin I trust to translate this.
Nevertheless, the uncertain provenance notwithstanding, nothing she says is out of line with what we know about the bug and it jives well with the analysis of experts in the U.K. The wildly divergent numbers with respect to the ones provided by the C.C.P.
might not be remarkable either if the C.C.P. numbers are confirmed cases and the numbers 'Mystery Nurse' provides are of those estimated to be infected but not symptomatic yet.
Styxhexxenhammer has thoughts on the matter:
As he notes above, It is reported here (via U.K.Channel 4) this morning by the Chinese Government that the virus is getting "stronger" though it's unclear if that means in lethality or virulence (or both).
Regarding the suspicions in some quarters about the fact that there is a
government bio-research lab studying the most .dangerous pathogens in
the middle of 'City Zero' ; Well, it turns out that serious concerns were raised about the then-under-construction Wuhan lab in 2017. Note too that there were 2 earlier containment failures with the less dangerous SARS virus in a Beijing lab about a decade ago.
One involved a protocol issue and one involved an attempted live virus
vaccine that had not, in fact, been rendered fully safe. None of this is
strictly relevant to the current situation, it doesn't matter if the virus came
from a botched experiment, a snake, a bat, genetic recombination at the
local bathhouse, or the crashed satellite from project Scoop. It exists and appears to be real despite some obvious hype.
The thing is, we don't know what we don't know, about the actual
mortality rate, and transmissability, though the latter seems to be
alarmingly high given the measures taken by the powers that be. These quarantines are not taken lightly after all. This
could be, in ascending levels of undesirability: hype, SARS, a bad flu
season, 1918, or North America 1545-1610.
I'm betting on a bad flu season none of us has the shot for, so I'd suggest having a lot of canned goods and buying some mas....oh.
As we approach the third decade of the 21st century we should not be surprised to see science fiction become science fact...but we at Brickmuppet Blog express our consternation that instead of flying cars, our scientists are pursuing Monolith Monsters.
Meanwhile, in the Constellation of Orion
One of the Brickmuppet's Crack Team of Science Babes takes time from whatever Ren-Faire she's attending to bring us some news from the intersection of astronomy and explodimology.
It seems that he colossal red-giant star Betelgeuse, the right shoulder of the
constellation Orion and heretofore one of the brightest stars in the
night sky, has, over the past 3 months started dimming
and over the last few weeks dramatically so.
"Unless,being 2019 and all, the light from the shoulder of Orion is dimming due to smoke from the attack ships on fire."
Hush.
If theories about these things are correct there is a possibility that the star
will erupt in a supernova...soon.
A super Nova of Betelgeuse is not unexpected as the star has long been thought to be near the end of its life, though that being measured in millions of years the notion that we'd see it in our lifetimes was (and still is) considered remote. However, if it does explode sometime in the next few months or years, the death of Betelgeuse could have profound effects on earth.
Such "profound effects" might include having every hysterical click-baity doomsayer prattling on about the end of the world ad-nauseum, as well as speculation in the media that the obliteration of Orion's shoulder is due to Russian collusion or global warming and celebrations in certain quarters of the replacement of the previous ableist constellation with a more diverse one.
However, at 430 light years away (give or take 100LY) Betelgeuse is far too distant to provide a radiation hazard from a super nova. The non-secondary effects are likely to be limited to having the star be
much brighter than a full moon for several weeks or months resulting in
near daylight at midnight at certain times and presenting two suns in the
daytime sky during others. If it transpired, we will notice it but on the off chance that it actually goes all 'splody the only dangers it would pose are likely to be people walking into trees while looking at it.
Of course, whatever transpires from this, it will have already happened...330-530 years ago.
That orange thing in the upper left (our left, not Orion's left )...it's going away...someday.
Great Discoveries are Sometimes Unacknowledged When They Happen
One of the Brickmuppet's Crack Team of Science Babes takes a moment to tell us that John Michael Godier has a 45 minute interview with Dr. Patricia Ann Straat, who was in charge of the detect life experiment in the Viking Landers in '75/76. She and her team thought they'd found life then but after some initial enthusiasm it was declared a false positive and then pretty much ignored after the new NASA leadership took over in '77. She and others have recently pointed out that the experiments alleged to debunk her team's claims were improperly done and she's got a very strong case that Martian life was detected in 1976.
But wait. There's more!
"New evidence regarding organics and seasonal methane emissions seems to support her conclusions and if these pan out, it'll be important to remember that it was Dr. Straat and her team who first discovered life on Mars, probably before the first people who will first see it under a microscope were born. "
Time will tell but her argument seems compelling. Indeed, its looking more and more like she's right and that the decision to not put any life detecting experiments on the subsequent probes was ill-conceived at best. She has a book on the topic that is, for some reason, not available in the usual places but you can buy it here.
Full Disclosure: "Science Babe" is actually Makise Kurisu from Stein's Gate, but you know that, because you've seen it, unless you haven't in which case you're wrong.
1
We need more info for anything to be conclusive, probably. One bit of information is far too small for all the things we would want to know about life on Mars, if it exists.
As a grad student, it was amazing how hard it was to get repeatable, reliable results from an experiment when you could open up the chamber and fix things, restart things, kick things, resolder bad connections, etc. (In my case, I got a negative result for what I was searching for.)
For something that's millions of miles away on a robot probe with limited manipulators, it's amazing they got results that could even be classified as "positive" or "negative" instead of "huh?". It's amazing they could propulsively *land* the thing with the technology of the time.
Posted by: MadRocketSci at Mon Nov 25 10:57:09 2019 (K+Kza)
2
Could still be an inorganic reaction with an oxidizing chemical in the soil. The heated soil test seems like they controlled for that, but they could also have baked out the active inorganic chemical too in the low pressure atmosphere.
Need more testing. Need a robot with microscopes and slides. Need moar info.
Posted by: MadRocketSci at Mon Nov 25 11:06:05 2019 (K+Kza)
Follow-Up to an Earlier Post
A MUCH earlier post; see, back in November of 2007 we noted that archeologists had discovered a semi-mythical submarine that was claimed to have been all kinds of advanced but was believed to have been lost in 1869, 150 years ago this year.
The SUB MARINE EXPLORER did indeed exist and was found 12 years ago. She was intended for underwater salvage, exploration and pearl diving and sallied forth to Panama to do the latter, where her entire crew died "of fever" after a long dive.
Examination of the wreck and what was known of the sub's design indicate that they died of the bends after staying down to long and not decompressing properly. Now, a dozen years later, the reports of the survey are available online as well as photos and schematics of the submarine itself derived from the wreck that confirm other reports about how advanced the vessel actually was. The SUB MARINE EXPLORER was remarkably advanced for its day and worked, achieving most of its design goals. It had the ability to equalize pressure like a diving bell allowing its crew to exit the vessel underwater.
From the set of plans drawn up from the wreck and historical records at the Library of Congress
Sadly, reliable dive tables were not available until the early 20th century and this condemned the crew to an early grave despite everything else being done right. Unknown unknowns are among the most dangerous of things, but are inevitable when exploring new frontiers.
1
"Unknown unknowns," they are called. My over-degreed & credentialed pharmacy colleagues are discovering they are not construction project managers...
Similarly, when Musk drops his volunteers onto Mars (and I would still gladly put my name in) they will encounter things that all of us brights who read Brickmuppet's blog could never imagine.
Death, rarely, is sometimes the only way forward. The next colony will build upon the first's lessons. And their memories and bones.
Posted by: Clayton Barnett at Sat Nov 2 20:28:48 2019 (ug1Mc)
50 Years Ago Today ...The internet was born. around 9:00PM technicians at UCLA loaded up a program to allow two workstations to talk to one another across the country via phone line.
At 10:30 PM the log entry read...
"Talked to SRI, Host to Host.â€
And ARPANET, the first crude iteration of the internet was operational.
This has led to a myriad of advances, some amazingly good and some with terrifying implications.
1
> what we'll be using this technological wonder for during this evening's celebration is providing seasonally appropriate cheesecake on your computer monitor
It's what Vint Cerf would have wanted.
Posted by: Pixy Misa at Tue Oct 29 22:31:20 2019 (PiXy!)
Chariklo and the Importance of Reading the WHOLE Page Before Linking it
I was curious about that ringed asteroid/dwarf planet they found between Uranus and Saturn a while back. Chariklo is one of several asteroids in that region between Uranus and Saturn which have collectively been named the Centaurs. The objects in this small group are named after centaurs from Greek mythology and as there aren't many of those, any non-Centaur spouses/children from when the myths implied that the achievement "hybrid vigor" was unlocked...still they are likely to run out of names from Greek Mythology and will soon have to go to other sources.
Etymology aside, these objects don't represent a large field like the Main Belt, the Jovian Trojans, or Hildas, but are thought to be a few objects from the Kupier Belt tossed sunward like Triton and Pluto/Charon. The largest of these, Chariklo, (named after Chiron's wife) had caused some confusion due to uncertainty about its size and readings that indicated it was either big and icy or small and surprisingly not so. It turned out that the Chariklo is a largely spherical object with an icy ring system that may imply two or more shepherd moons as well.
Not enough is known about this object to know if it will ultimately qualify as a Dwarf Planet (it would have to be in hydro-static equilibrium) but there's a chance that it might. It's certainly at the low end of the scale of such things as can be seen here.....
Because Ceres is not a common frame of reference, the below picture may be helpful.
Besides the general coolness factor of the rings, one thing appears curious from the perspective of a layman with a mere Bachelor of Arts degree. The rings were discovered in part because when viewed front on the object appeared to be an icy object, when viewed ring edge on the moon appeared to be ice free. Now, "ice free" might mean largely anhydrous like Psyche, or just covered in regolith like Ceres. If the former, Chariklo might be something even more interesting. If all it's water is baked out then this thing might be a differentiated object like Vesta and Psyche, with all the potential for mineral wealth that that would imply.
As of now I have not learned anything more along those lines.
However, while looking, I did encounter the exact opposite of learning. Well almost. In my search I blundered onto this website and very nearly used it as a reference hyperlink...after all it linked to space.com and had a nice overview of the object...the etymology of its name, and it then went on to discuss where the object can be seen in the sky at various times of the year which might be useful if one somehow has a ridiculously powerful telescope as this is a very dark object, (though the rings might be visible to some very well equipped amateur astronomers if one knows where to look).
Alas, this positional information was in reference to which HOUSES the object is in when viewed from Earth because the discovery of this object fills in some of the gaps in the predictive powers of...astrology.
Chariklo aspects seem to be prominent in individuals who take a step into the future. It may be through science (Pierre Curie, who studied the various types of energies, had a close Chariklo conjunct Sun...the greatest source of energy for this planet; Alexander Graham Bell, who studied ways to communicate with the deaf and who invented the telephone, had a close Chariklo conjunct Mercury....planet of communication).
Oh Lord.
Yes, the cray-cray is strong with this link. The author manages to tie in many of the cast and crew of Star Trek, Dr. Who, The Outer Limits and various other Sci-Fi authors to being born under the sign of this object, because this space-rock being linked...somehow...to forward thinking people is obviously linked to those involved in science fiction. Obviously.
Obviously.
Actually, there is a tremendous amount of research that went into this page. There is the equivalent of four typed pages that catalog when people of note were born when this asteroid happened to be in a certain arbitrary location when viewed from the Earth*.
There's an awful lot of numbers and charts.
So, (checks) I appear to be a Capricorn. If I were to apply this websites knowledge practically, what conclusions could be drawn about me?
Ms. Shianus by Okayado. Profound wisdom inspired by the Onion.
The algorithms that are deciding who gets to speak and what is a credible source can't tell the difference between astrology and astronomy.
This is why we can't have nice things.
We're doomed! DOOMED!
Of course, in a few million years Chariklo might be too, since it's likely to eventually join the Saturnian or Uranian system....perhaps catastrophically.
Green=Uranus Yellow=Saturn Unlikely Pink=Chariklo
*The third large object orbiting an unremarkable green dwarf in a big empty bubble in the Orion arm of The Milky Way Galaxy, one
of what is provincially known as The Local Group, a cluster of Galaxies which is somewhat removed from the apparent center of Lainekia.
1
" a layman with a mere Bachelor of Arts degree."
LOL.
Posted by: Rick C at Wed Oct 2 09:08:36 2019 (Iwkd4)
2
I am reminded of a very old Non Sequiter daily comic, where a professor is welcoming his new course-worth of students to Astronomy, and one of them asks about the difference between astronomy and astrology. The reply of 'Lots and lots of math' clears the room.
As in many/most things, Wiley and Non Sequiter was channeling real life with that one.
Posted by: cxt217 at Wed Oct 2 16:44:04 2019 (LMsTt)
3
A select few astrology mavens can actually turn out useful, if you are a deep enough classics nerd to need info about Greek and Roman astrology. Some crazy astrology guy did some really beautiful translations of Latin and Greek astrological works, which was helpful for the paleoastronomy people.
Especially since it's weird to have to explain, "Of course I don't believe this, and I'm just translating it," whereas nobody has to explain their position that there are obvious deficiences in an early science or agriculture text.
Of course, it's much more entertaining to read footnotes written by an ag guy for an ag book, or a veterinarian for a veterinary book. "We still do this" and "this is crap" footnotes often directly parallel the format of the original old book!
Posted by: Suburbanbanshee at Tue Oct 15 14:44:38 2019 (sF8WE)
While We Weren't Looking
One of the things that comes up from time to time when discussing futurism and space travel is that there is a theoretical (if tenuous) basis for violating the generally accepted impossibility of superluninal travel.
Developed by an acclaimed Mexican scientist named Dr. Miguel Alcubierre, the Alcubierre Warp Drive sounds superficially similar to the propulsion in Star Trek, but is based in real physics..albeit very theoretical physics.
You see, since the speed of light is very firmly established as an insurmountable obstacle Dr. Alcubierre was only able to develop a mathematically sound way of violating this by using negative values for certain variables....in this case, um, mass.
In the above interview, Dr. Alcubierre is quite up front that this is a dubious prospect as negative mass is not something that one encounters...it is simply not forbidden to exist, we're not talking about anti-matter...we're talking about "stuff" with a value of less than nothing.
So unless someone invents/discovers "negative mass" this is basically at the intersection of physics, mathematics, special pleading and vapourware.
"Unless..."
Now, one of The Brickmuppet's Crack Team of Science Babes points us to this post at Next Big Future which offhandedly mentions that scientists from The University of Rochester generated negative mass last year and further poking around reveals that Scientists in Washington did so in 2017.
Seems a rather LARGE thing to have avoided news coverage, but it does appear to be legit. This is not to say that the Alcubierre Drive is imminent, or even practical, but it is just a tad more possible.
Scientists now know a little more of what they don't know and that is actually progress.
If negative mass can be produced in any quantity (and there are formidable issues with that) then even if there is no practical result to the warp drive research, the negative mass has some interesting (potential & theoretical) applications that border on Clarke-Tech.
And even if the Warp Drive is possible, it's likely that we'll never see anything like FTL in our lifetime, but the fact that scientists are discovering things like negative matter point to a very bright future indeed, if we can avoid some dystopian speedbumps on the road to tomorrow.
1
Negative matter or anti-mass, or something similar seems to be a key ingredient in many FTL schemes, not just this warp drive.
Robert Forward explored some of the more bizzare consequences of having negative matter in some of his science-fiction. It turns out that if you have anti-mass, then entirely in keeping with the conservation laws of mechanics, you can generate arbitrary amounts of positive and negative energy, and you can construct self-accelerating objects. (Two related to momentum-energy conservation). That lets you get away with just about every soft sci-fi trope.
While this may seem like a mathematical absurdity, solid-state physicists have managed to come up with massy pseudoparticles (little excitations of a physical medium driven by light impinging on the medium), some of which have positive and negative effective mass. A non-linear interaction governed by lattice vibrations then coupled them together and demonstrated the self-accelerating behavior predicted by Forward. While it's not free-space negative mass, it's a suggestive physical model.
Posted by: MadRocketSci at Sat Sep 28 18:32:51 2019 (K+Kza)
2
Nevermind, I think you're pointing to the same work (Univ of Rochester). I believe they're talking about quasi-particles that have "negative mass" within the context of their background medium.
Some sort of free-space particle in the wild demonstrating negative mass would be the holy grail.
Posted by: MadRocketSci at Sat Sep 28 18:38:25 2019 (K+Kza)
Borisov Intercept ProposalIn the recent post on the extra-solar comet Borisov, we used the rocketry and ballistics expertise bestowed by our liberal arts education to to recklessly speculate that it might be possible to launch a quick and dirty probe to get a close up look at this visitor from beyond.
Now one of The Brickmuppet's Crack Team of Science Babes has found a proposal to do just that, presumably after slogging through academic sites for many hours.
The paper is using the SLS as it's baseline launch vehicle, and not the larger and more powerful and more or less existing Space-X Super Heavy.
However, this paper by actual rocket scientists, points out that the rather significant detail that the launch window for a conventional intercept of this thing was actually a bit over a year ago. Borisov is coming no closer to the Earth than Mars before it speeds off into the void.
Instead, the scientists are looking at a high energy, multiple slingshot trajectory and is proposing a launch in 2030, and an intercept in 2045, which gives plenty of time to work things out in a more conventional manner.
Interestingly, it also notes that a mission to Omuamua, using a New Horizons class probe is still possible. Which is quite awesome.
Borisov
One of the questions that was left unanswered in the wake of the recent passing through the solar system of the interstellar object Omuamua was whether this was a vanishingly rare event, or if such interstellar objects pass through fairly frequently and we hadn't noticed them.
Well, there is now some evidence that it may be the latter.
"Given that its closest approach to Earth will be in December, it is also possible (albeit unlikely) that a very austere probe might be sent. Note that Elon Musk is planning a full up launch of his super rocket in October, some kitbashed probe might make a better payload than the water that normally acts as ballast on these things."
It should be noted as well that Mr.Gennady Borisov, the Russian amateur astronomer who discovered this comet, pulled off quite the impressive feat with his homemade telescope found what the algorithms had missed.
[quote] Aside from how prominent or not Gennady’s comet will become, the most amazing thing is that he beat the automated surveys to the punch. These days nearly all comets and many asteroids are found
by professional astronomers using robotic telescopes hooked up to
sensitive cameras and computers. Large areas of the sky are covered each
clear night. If a fuzzy, moving object is detected by the computer,
astronomers are alerted, follow-up observations are made and the new
object receives a letter, number and the survey’s name. That’s why
there are a plethora of comets in the past 15 years with names like LINEAR(Lincoln Near-Earth Asteroid Survey), Pan-STARRS (Panoramic Survey Telescope & Rapid Response System), LONEOS (Lowell Observatory Near-Earth-Object Search) and others.
With data from the Hubble Space Telescope, water vapor has been detected
in the atmosphere of an exoplanet within the habitable zone of its host
star. K2-18b, which is eight times the mass of Earth, is the only
planet orbiting a star outside the solar system (or "exoplanetâ€) known
to have both water and temperatures that could support life. Image
credit: NASA's Goddard Space Flight Center
However, Hubble has discovered that the planet is, in fact quite wet. This could mean it's a Neptune type planet that's boiling away or it might be a very large Earth like planet that has been able to retain its atmosphere due to high gravity and, perhaps, a strong magnetic field.
In either case, it's warm, wet ,and while quite unlike Earth in various ways it would seem now to have at least the potential for life of some kind....which is indeed pretty epic.
And logically, there ought not to be any downside.
In any event, such minor annoyances notwithstanding, that we're finding these things is pretty awesome. While water vapor has not been found on an earth sized, habitable zone world before now, there are quite a few potential candidates for life-bearing planets. Here is a conservative list of the exo-planets currently thought to be potentially habitable, minus K2-18b which was on it some years ago but was removed and has not, as of yet, been put back.
Hobby Space News of the commercial space industry A Babe In The Universe Rather Eclectic Cosmology Encyclopedia Astronautica Superb spacecraft resource The Unwanted Blog Scott Lowther blogs about forgotten aerospace projects and sells amazingly informative articles on the same. Also, there are cats. Transterrestrial Musings Commentary on Infinity...and beyond! Colony WorldsSpace colonization news! The Alternate Energy Blog It's a blog about alternate energy (DUH!) Next Big Future Brian Wang: Tracking our progress to the FUTURE. Nuclear Green Charles Barton, who seems to be either a cool curmudgeon, or a rational hippy, talks about energy policy and the terrible environmental consequences of not going nuclear Energy From Thorium Focuses on the merits of thorium cycle nuclear reactors WizBang Current events commentary...with a wiz and a bang The Gates of Vienna Tenaciously studying a very old war The Anchoress insightful blogging, presumably from the catacombs Murdoc Online"Howling Mad Murdoc" has a millblog...golly! EaglespeakMaritime security matters Commander Salamander Fullbore blackshoe blogging! Belmont Club Richard Fernandez blogs on current events BaldilocksUnderstated and interesting blog on current events The Dissident Frogman French bi-lingual current events blog The "Moderate" VoiceI don't think that word means what they think it does....but this lefty blog is a worthy read nonetheless. Meryl Yourish News, Jews and Meryls' Views Classical Values Eric Scheie blogs about the culture war and its incompatibility with our republic. Jerry Pournell: Chaos ManorOne of Science fictions greats blogs on futurism, current events, technology and wisdom A Distant Soil The website of Colleen Dorans' superb fantasy comic, includes a blog focused on the comic industry, creator issues and human rights. John C. Wright The Sci-Fi/ Fantasy writer muses on a wide range of topics. Now Read This! The founder of the UK Comics Creators Guild blogs on comics past and present. The Rambling Rebuilder Charity, relief work, roleplaying games Rats NestThe Art and rantings of Vince Riley Gorilla Daze Allan Harvey, UK based cartoonist and comics historian has a comicophillic blog! Pulpjunkie Tim Driscoll reviews old movies, silents and talkies, classics and clunkers. Suburban Banshee Just like a suburban Leprechaun....but taller, more dangerous and a certified genius. Satharn's Musings Through TimeThe Crazy Catlady of The Barony of Tir Ysgithr アニ・ノート(Ani-Nouto) Thoughtful, curmudgeonly, otakuism that pulls no punches and suffers no fools. Chizumatic Stephen Den Beste analyzes anime...with a microscope, a slide rule and a tricorder. Wonderduck Anime, Formula One Racing, Sad Girls in Snow...Duck Triumphalism Beta Waffle What will likely be the most thoroughly tested waffle evah! Zoopraxiscope Too In this thrilling sequel to Zoopraxiscope, Don, Middle American Man of Mystery, keeps tabs on anime, orchids, and absurdities. Mahou Meido MeganekkoUbu blogs on Anime, computer games and other non-vital interests Twentysided More geekery than you can shake a stick at Shoplifting in the Marketplace of Ideas Sounds like Plaigarism...but isn't Ambient IronyAll Meenuvians Praise the lathe of the maker! Hail Pixy!!