An evening pause: For the younger audiences, Ryan played Granny Clampett on the silly 1960s TV show, The Beverly Hillbillies.
The song is fun, but I just can’t get that vision of her incompatibility with her boyfriend out of my head.
Hat tip Alton Blevins.
New research into the air filtration systems on commercial passenger jets has found that it is almost impossible to contract COVID-19 while on an airplane.
A new military-led study unveiled Thursday shows there is a low risk for passengers traveling aboard large commercial aircraft to contract an airborne virus such as COVID-19 — and it doesn’t matter where they sit on the airplane.
Researchers concluded that because of sophisticated air particle filtration and ventilation systems on board the Boeing 767-300 and 777-200 aircraft — the planes tested for the study — airborne particles within the cabin have a very short lifespan, according to defense officials with U.S. Transportation Command, the Defense Advanced Research Project Agency (DARPA) and Air Mobility Command, which spearheaded the study.
You can read the report [pdf] here. I especially like this quote from their conclusions:
For the 777 and 767, at 100% seating capacity transmission model calculations with a 4,000 viruses/hour shedding rate and 1,000 virus infectious dose show a minimum 54 flight hours required to produce inflight infection from aerosol transmission.
In other words, you can fly around the world more than twice on the same plane, without stopping, without any real risk of getting infected.
Need I add that the use of a mask will likely make no difference either, while probably increasing your chances of catching some disease simply because the long term use of any single mask is unsanitary and almost guarantees it will be carrying pathogens on your face where you breathe?
Click for full image.
No, today’s cool image is not a variation of the absurd “face on Mars” that our alien-obssessed fantasy culture focused on for more than twenty years that turned out to be nothing more than a mesa whose shadows in one image made it look very vaguely like a face.
Instead, today’s cool image is of a very weird Martian geological feature that strongly resembles the whorls and curls seen in all fingerprints, and is thus apply named “Fingerprint Terrain.”
The photo to the right, rotated, cropped, reduced, and annotated to post here, was taken by the high resolution camera on Mars Reconnaissance Orbiter on August 26, 2020. It shows part of the surface of Mars’ south pole residual icecap, about 130 miles from the south pole, at a place where the temporary thin dry ice mantle that arrives every winter with the bulk of it sublimating away with the coming of spring.
The fingerprint in this image shows that sublimation process, with the gaps in dry ice mantle getting wider and larger as you move north, until the ridges between disappear altogether.
But why does it look as it does, like a fingerprint? In other places this sublimation process does not look like this at all. Sometimes we get spiderlike formations. Sometimes we get splatters that suggest geysers. Sometimes the surface sublimates to produce swiss cheese shapes. But why a fingerprint here?
I asked this question of Shane Byrne of the Lunar and Planetary Lab University of Arizona, who had requested this particular image, hoping he and other planetary scientists had investigated this geology and come up with an explanation. His answer illustrates how little we yet know about Mars.
It’s almost definitely some sort of sublimation process, but it hasn’t been well investigated. There are some papers that talk about sublimation landforms on the cap in general and map out where different types are, but nothing that I know that’s specific to the fingerprint terrain.
In other words, why the dry ice cap sublimates away in this manner, at this and other locations, remains unexplained.
I’ll say it again: Mars is strange, Mars is alien, and Mars is therefore a place humans must go.
An event happened yesterday in our home that I think illustrates forcefully why no one can trust any poll being conducted during this election season.
The phone rings. As I now do on all calls, I pick it up, say “Hello?” and wait to see if it is a live person on the other end. If it is a recording of any kind, spam, political, poll, whatever, I immediately hang up. My life is too short to waste on robots or crooks. (I should add that if Diane picks up she does the same, though she doesn’t even offer them a “Hello.” She also often screens calls with caller ID, and thus often does not even bother to pick up.)
Sadly, a large majority of all in-coming phone calls now are from these robots, with the political and pollster robocalls coming more and more frequently, sometimes ten to twenty times a day.
If it is a live person, I listen to find out what they are calling about. If the call is for a commercial product or a scam, I tell them to stop calling us and hang up.
If it is a from a political campaign office or a survey I also say I am not interested in talking, and say good-bye. If the call is from a survey but specifically asks for my wife, I tell her about the call so she can decide what to do.
This happened yesterday. Her answer: “Please tell them to go away.” I then told the guy on the line her exact words, adding that I agree entirely with her. He laughed, and said good-bye, ending the call.
A lot of political experts have wondered whether the refusal of shy Trump voters to answer poll questions might be skewing the poll totals in favor of Biden and the Democrats. This may be so, but I think something more fundamental is happening that makes all poll results untrustworthy.
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Two campaign staffers in the Biden-Harris presidential organization have now tested positive for COVID-19.
Kamala Harris has suspended in-person events until Monday after two campaign staffers tested positive for COVID, reports the Associated Press. Harris was supposed to travel to the battleground state of North Carolina on Thursday.
The campaign insists that Joe Biden was not exposed to the virus, but he and Senator Harris spent several hours together last week while campaigning in Arizona. According to the report, Kamala’s communications director and a traveling staff member tested positive after that trip.
My purpose in reporting this really very non-news story is to make two points:
One: Despite so-called strict regimens to protect its campaign people from getting infected, including masks, social distancing, and any number of other procedures now popular in our fear-crazed society, none worked. The infection still arrived, as such infections are guaranteed to do.
Two: No one will die from this outbreak. In fact, it is not even clear anyone will get sick. The Wuhan virus does not kill healthy people. Like the flu, the worst it does is make a healthy person sick for a week or so, after which they recover completely and return to normal life.
We need to stop being so afraid of this virus. It is not the boogie-man it is made out to be, no matter what some people say. It is a variation of the flu, worse for the old who are already very sick, but more harmless for the young and the healthy. With that knowledge in mind we should focus on protecting that very narrow threatened population, while letting everyone else return to a normal life that involves no masks, no social distancing, and above all, no fear.
The FAA today released its new streamlined commercial space licensing rules, aimed at simplifying the process for launch companies. According to the press release,
The new rule consolidates four regulatory parts and applies a single set of licensing and safety regulations for all types of vehicle operations. It also provides flexibility for operators to meet safety requirements. The rule improves efficiency by encouraging launch and reentry operators to suggest and implement design and operational solutions to meet the regulatory standards.
You can read the rule here [pdf].
Though it appears the FAA and the Trump administration truly wish to streamline this licensing process, it is not clear yet that these new rules do it. Some aspects, such as the rule that allows a single license to cover multiple launches, appear effective. The effect of others however remains murky. I would love to get feedback from anyone in commercial space directly impacted by these new rules. Are they as good as the FAA claims?
NASA has now scheduled the first full static fire test of the core stage of its SLS rockt for no earlier than November 14th.
Currently installed in the B-2 Test Stand at NASA’s Stennis Space Center in Mississippi, the massive 212-foot-tall core stage has completed six of eight planned green run tests before it can be shipped to KSC by barge as the final piece of the first mission of the Artemis program, slated for launch in November 2021.
Officials with NASA as well as contractors Boeing and Aerojet Rocketdyne gave an update on the core stage progress on Tuesday, stating the tentative date for the hot fire test is Nov. 14, and the target for it to be loaded onto the Pegasus barge for the trip to Florida is Jan. 14.
“So far the design has held together extremely well. We’ve not really had any surprises,” said John Shannon, Boeing’s vice president and program manager for the Space Launch System.
Unlike SpaceX, which uses tests like this to figure out how to build its rockets, NASA uses these tests to confirm its designs and construction at the very end of development. This difference in approach, now so clearly illustrated by simultaneous tests going on from both, I think shows the advantages of SpaceX’s approach. By testing during development, SpaceX can quickly fix any problems it finds, and move forward fast with better designs. This approach also results in a less expensive final result.
NASA instead must make sure its designs are perfect on the drafting board, which therefore requires their engineers to include gigantic design margins, resulting in long construction schedules and an expensive final product. Worst of all, should SLS fail during this final test, NASA will face some very difficult and expensive choices, none good.
Click for full image.
The two-pronged European and Japanese probe BepiColombo today has completed its first of two fly-bys of Venus on its way to an arrival at Mercury in 2025.
The image to the right is one of 64 taken during the fly-by. The science team has created a movie from those images, showing Venus slide past as the spacecraft slewed to view it. During the fly-by the instruments on board its Japanese and European orbiters, both of which will separate and operate independently once they reach Mercury, gathered data of Earth’s sister planet.
The spacecraft still needs one more Venus fly-by plus six past Mercury to get it on a trajectory that will put it in orbit around Mercury. It has also already completed one fly-by past Earth in this complicated route.
Capitalism in space: NASA yesterday issued fifteen development contracts to fourteen private space companies, totaling $370 million, to help them develop a variety of new space capabilities.
The funding is spread across 15 contracts to 14 different companies, including SpaceX, Astrobotic, Lockheed Martin, United Launch Alliance and Intuitive Machines.
Nearly 70% of the money is earmarked for the management of cryogenic fluids such as liquid hydrogen and liquid oxygen. SpaceX, for example, will get $53 million for an in-space demonstration that will transfer 11 tons (10 metric tons) of liquid oxygen between tanks on one of its next-gen Starship vehicles.
What makes these contracts different from past NASA development contracts is fundamental. First, the design work comes from the companies, not NASA. Therefore products will be designed with the company’s needs in mind, not the government’s, and will also likely be designed faster and more efficiently.
Second, the companies will own what they build, and will be able to sell or use it however they wish. SpaceX for example wants this capability to give Starship the ability to leave Earth orbit, for its own commercial flights.
A space junk tracking company is predicting a “more than 10%” chance that two large pieces of space junk with a combined mass of more than 6,000 pounds might collide tonight over the south Atlantic just before 9 pm (eastern).
The two pieces, one a defunct Russian satellite and the other a Chinese upper rocket stage, will be moving at more than 32,000 miles per hour relative to each other at the moment when impact might occur.
If they do hit, the collision will break both pieces into many new smaller pieces of space junk. Not a good thing.
Russian new sources today reported that their oxygen regeneration system on the ISS module Zvezda has failed.
A Russian cosmonaut told a specialist from the Mission Control Centre in the Moscow Region that the Electron-VM OGS installed in the Russian Zvezda module had failed.
Essentially this information was overheard by Russian sources during communications between mission control and the Russians on-board ISS.
Whether this failure is related to the rise in temperature this week in Zvezda is unknown. Also, the failed unit itself might be one that came with the station when it was launched 20 years ago, or it might be an upgraded unit launched later.
This unit is designed to recycle oxygen on board so as to reduce the need to haul up new supplies. Its failure poses no immediate threat to the station or its crew, since there is plenty of oxygen store on board and the U.S. has its own regeneration unit. However, if it isn’t repairable and can’t be replaced quickly it likely means future cargo manifests will require larger stocks of oxygen. It also might mean a reduction in total crew on ISS, which only now is returning to more than three for long periods because of the initiation of American private ferrying serves.
Meanwhile the location of the leak on Zvezda remains unknown. It needs to be pinpointed and hopefully solved, because if it is a more serious age issue ISS managers need to know.
Embedded below the fold in two parts.
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