June 14 2020, 12:26

Watched Don’t F**K with Cats. Wow! Netflix released one of the coolest documentaries I’ve ever seen. Three hours, three episodes. Highly recommend.

In 2011, some dude releases an anonymous video online where he kills kittens on camera. An investigation begins on the internet. Every little detail from the video gives a piece of the puzzle. But, as expected, it doesn’t end with just kittens. The killer sets up a real quest for the police and independent investigators. /You better not read the Wikipedia about the killer at all, especially before watching the movie. The wiki has too many unpleasant details/

June 14 2020, 01:08

Finished watching Devs. And once again, I catch myself thinking that I find it difficult to watch science-popular films where the idea is full of holes, and nothing fits together, and the authors do not explain it at all. Take the worlds of Tolkien or George Martin, which are fantastic, but overall consistent. Here, various theories are taken, which the audience will not understand anyway, mixed together.

In my opinion, if you tackle the theory of determinism and the idea of Laplace’s demon, then come up with a solution for the causal loop that all time travel theories inevitably encounter. For example, what prevented people from making choices, knowing in advance what was “predetermined” for them? There should have been a law of nature that counteracted this. For instance, the projection of the future comes/is induced only in a state of sleep, but reliably disappears upon awakening, leaving only the memory of the fact. Or at the moment when a person learns about their future, the universe in which they exist at that moment simply shuts down (though it’s unclear how then anyone would learn about this law), and the universe where they have not yet learned about it continues to exist. But most likely, everything will end much earlier: to “calculate” the future, it is necessary to gather information about the state of the entire world, and this is impossible because you cannot take a snapshot of the world. Information gathering cannot be instantaneous at least due to the finite speed of information transmission, meaning information about different events will be asynchronous. That is, absolute simultaneity is impossible – Einstein showed this, and therefore it is not possible to create what the series talks about.

I miss proper science fiction. Of all the films over the last ten years, “Interstellar” came closest. But “closest” does not mean “very good.” “Interstellar” also had a lot of inconsistencies.

It would be wonderful if through science fiction films, real ideas and concepts from scientists were visualized. Let them be fantastic, but at least consistent and not “holey” for people who understand the subject. That is, a scientist comes up with some string theory, which cannot be proved, and a movie is a great way to reveal it to the public. And together with someone who can come up with scripts, it forms the basis for a movie. And so, that the scientist’s name would be in the credits. Then they wouldn’t let nonsense through. For example, it would be possible to make a movie about a twin of our universe made of antimatter, where time flows backward (google CPT-Symmetric Universe) or about a world in which all molecules of organisms are twisted in the opposite direction (google homochirality). Of course, my level of education is not enough to create a full scenario without “holes,” but that’s the challenge.

Well okay, these topics are too complex. But it would be possible to make sci-fi about people who from birth (or even earlier) were trained to perceive signals from artificial sensory organs, much richer than our “built-in” ones, resulting in their brains developing differently, and they would grow up with super abilities, capable of solving problems of a completely different quality than us. This is a perfectly “possible” scenario, though not yet tried in practice. Or take the theme of creating people with artificially altered DNA. Or take Elon Musk’s neuralink and fantasize about what happens when everyone can get their implant and order a program for it online. Or make a movie about a world where organ transplantation has become very simple and cheap, leading to a huge crisis, a fracture of society into castes, and a war in which everyone eventually killed each other and humanity started all over again, from caves and the invention of fire.

This is the kind of science fiction I want. To be “without holes” and closer to science.

June 12 2020, 20:31

Near the house, we encountered a snapping turtle hesitant to cross the road. I had to act the Good Samaritan and escort it to the pond. These turtles are very aggressive; they have a long neck and can snap off a finger piece before you blink. By the way, these turtles were once used for soup, among three other types.

Here’s a video of a guy who earns likes on YouTube by letting various creatures bite him. This time it was the snapping turtle’s turn

June 12 2020, 01:26

Finishing @[106201067632497:274:Devs]. And I keep thinking, who does Foster remind me of? Dmitry Zavalishin @[521916472:2048:Dmitry Zavalishin] and Eugene Kaspersky merged into one. Besides the nearly identical look, they all had a team that was creating something strange and semi-secret in the basement (Dmitry had a next-gen OS, Eugene focused on DDoS topics). In both cases, their ladies (at different times and to a certain extent) controlled a world populated by genius programmers. In its time, ABBYY also had a long-term project with high ambitions, but David Yan doesn’t resemble Foster (yet). What other examples come to mind? Magic Leap, who raised over $2 billion for something unclear, and where the fog was so thick that the money kept flowing?

A spin-off needs to be released in Russia!

P.S. Watching Devs is essential. It contradicts all conventions, but is incredibly engaging. There was a calm dialogue in episode six, taking place in shadow, that lasted 26 minutes – exactly half of the episode.

P.P.S. As for being science fiction, it’s so-so — it’s better not to understand the complex speeches about quantum superposition and multiverses, otherwise it becomes embarrassing for the writers.

June 11 2020, 12:30

A very interesting article about how the US solved the problem of screw-worm flies (those that only reproduce by laying larvae in a wound – it was a major agricultural issue in the US at one time) by introducing fake males into the population. The method of their production is interestingly described

June 08 2020, 20:47

On Reddit, an Ask me anything session with the SpaceX software developers took place – https://www.reddit.com/r/spacex/comments/gxb7j1/we_are_the_spacex_software_team_ask_us_anything/

— SpaceX coders confirmed that the monitors in the Dragon capsule run a GUI based on Chromium and Javascript. Initially, it was developed for a NASA presentation, but then they liked it and kept it.

Crew Dragon

— Currently, there are no games on Crew Dragon, but they are likely to be added in the future.

— The docking simulator is not related to the actual software; it was started as just a fun project

— Tesla parts are not used in the Dragons (the displays are completely different)

— They cannot disclose landing algorithms — it’s a secret 🙂

— The control system of the Dragon is designed based on the principle of minimal interaction with the pilot

SpaceX Starship:

— The ground software for Starship is based on the web stack and GUI of the Dragon, and it will also be used in the interfaces of the Starship itself.

“Starlinks” (these are SpaceX internet satellites)

— They generate about 5 terabytes of telemetry per day; the Dragon mission generates hundreds of gigabytes

— Starlink software is currently updated about once a week. Thus, the software on the launched satellites is newer than on those that are in the process of being launched.

— Starlink satellites are more like data centers with servers rather than spacecraft

— Each launch of 60 Starlinks means deploying more than 4000 computers with Linux. Currently, there are over 30K computers and 6K controllers in the orbital grouping

— Starlink satellites are programmed to switch to a high aerodynamic drag mode for quick deorbiting if communication with the ground is lost for an extended period.

General

— Many programmers came to SpaceX from the gaming industry, due to similar mathematics and the ability to solve performance issues

Programming languages used:

— primarily C/C++, using minimal third-party libraries, preferring to write their own for better control over code quality, mainly employing OOP, although they also like to simplify the code;

web stack for displays — HTML / CSS / JS + web components + proprietary framework;

— python for testing and automation

— onboard computers run RTLinux (Linux kernel with the PREEMPT_RT patch, which turns it into a real-time operating system), controllers run bare code;

— GUI at the control center is based on LabVIEW

— Code quality is ensured through unit tests and integration tests, including on flight samples

— SpaceX has a powerful tool for aligning the flight program with the simulator. It allows for the full simulation of a mission or any failure scenarios, even with hardware spread out on a table.

— They might soon share screenshots from the Dragon displays

— The flight safety system operates not on the onboard computer but exclusively on controllers and directly interacts with sensors. This system is responsible for terminating the flight, for example, if the rocket veers off course.

So much more

June 05 2020, 19:51

An interesting opinion from an “insider”, astronaut Padalka:

“Dragon” has flown? Let’s not dramatize

As a professional, I am impressed and sincerely happy for our ISS partners. I wouldn’t describe the recent event as “the beginning of a new era in space exploration.” However, it’s undoubtedly a breakthrough for both a private company and for America as a whole. They have regained their position in crew delivery that was lost over the last decade. Investing in private rocketry and space exploration seems to be paying off. It is to be hoped that this example will finally spur our own space industry.

Surprisingly, a small private company, SpaceX (8,000 employees), has matched the entire Russian Federation in terms of manned spaceflight capacity. Elon Musk has managed to break our monopoly on manned flights to the ISS. This is a case where private entrepreneurship is outperforming state companies and state corporations. They clearly lag behind in human resources, engineering developments, and the speed of implementation. Additionally, state companies are more financially wasteful due to the excessive number of redundant bureaucrats and managers.

A few words about the spacecraft itself. All around are the latest technical developments and achievements. An endless number of innovative solutions: in the architecture of the spacecraft, its exterior design, interior construction and ergonomics, spacesuits, touch screen displays, and the graphic interface showing the crew’s communication with the ship’s systems. The large internal volume and level of comfort are impressive.

This is not just the launch of a new spacecraft, but a real step towards lunar and Martian programs. In my view, a point has been set in the space race between our countries in two respects. First, the programs have become international, as we have long been collaborating rather than competing. Second, with the launch of the new spacecraft and real progress in the lunar program, the Americans have no competitors. No one is breathing down their neck.

Our technological backwardness, lack of clear goal-setting in space exploration, the state sector of the economy with no competition, a shortage of highly skilled professionals in the industry, and other negative trends have led to the fact that, having started building a new spacecraft a year earlier than Musk, we succeeded only in renaming it—from “Federation” to “Eagle.” Earlier, we had designed the multifunctional, reusable spacecraft “Clipper,” but after six years, Roscosmos virtually shut down the project.

I find the humor of our leaders in such a situation amusing. It’s funny to watch the recent banter about the “trampoline.” As for the “rescue of the Russian rocket and space industry from American sanctions” in 2014 and mutual threats, they are too exaggerated and contrived. Dmitry Rogozin was likely misled by advisors and consultants at the time about our self-sufficiency and independence on the ISS. This is not the first time I’ve spoken about this.

At that point, the Americans depended on us not only for crew delivery to the ISS but also in terms of several technical aspects. We, in turn, depended significantly on them, and we still do to this day. Here are a few examples. For motion control systems that manage the station’s orientation, only the American side has gyrodynes (huge gyroscopes), while the engines that unload them operate in the Russian segment. They work in tandem—gyrodynes without engines are just space station scrap metal, and relying only on our engines for station orientation would be too fuel costly. The ISS wouldn’t last a month.

Lacking the long-promised, yet-to-be-orbited Russian scientific and power module (NEM) with its powerful solar panels, we get nearly half the necessary electrical power for the Russian segment from our partners. For continuous control (telemetry) and management of the Russian segment systems (including voice communications through the TsUP-ISS channel), Russians use the partners’ communications facilities. The partners’ systems partially operate in the Russian segment to support crew life as well. All equipment for psychological support—including mobile phone service, video conferences with families, internet—is provided by partners. The element base of the station’s computer network, including the entire Russian segment, is almost entirely not our own… And there are many such examples.

However, even a non-specialist understands: in this space project, our countries are interdependent. The relationships have been built and are built on full trust, especially concerning safety and supporting the well-being of crews aboard the ISS. But we must honestly acknowledge: now, after the Americans created their own crew transport system, the balance of interdependence is clearly not in our favor. In general, another transport system for sending crews to the ISS creates a reserve and enhances reliability in case of unexpected circumstances. For the past 20 years, there have been enough incidents involving both us and our partners. Collaborative cooperation is much more beneficial than mutual reproaches and threats.

What’s next? In the first half of next year, another manned spacecraft, Boeing’s Starliner, will begin flying to the ISS. The demand for our “Soyuz” and for delivering tourists might finally end, and Roscosmos will lose a significant part of its income.

In late May, the Americans began the final test (Green Run Test) of their super-heavy carrier. For the second half of 2021, its launch is scheduled as part of the Artemis 1 mission. NASA plans to conduct an unmanned lunar flyby with the Orion spacecraft. Artemis 3 mission involves the first astronaut landing on the moon in 2024/2025.

All the elements necessary for landing a person on the moon have already been worked out by them and are at the stage of construction or pending pertinent contracts in the near future. Next, NASA plans to organize joint missions with partners. The task is interesting and topical: to create a base on the moon suitable for long-term living. The prospective lunar orbital station, Lunar Gateway, which according to the partners’ plans, will replace the ISS, is intended to help implement the project.

It is obvious that we are unlikely to be in high demand as a full-fledged partner in future projects. However, we should not dramatize the situation by saying we will be “cast aside in the history of space.” We should take part in the project of the lunar station. We are not yet capable of building and designing quickly, and there is no one to do it. We do not have a heavy rocket or a spacecraft for bringing our crews to the lunar station either. It’s not the time now to make counter-demands and figure out the role, whether primary or secondary, our participation will be.

A joint project with partners will help us maintain the potential of the space industry, give us the opportunity to learn a lot, eventually prepare new engineering personnel, and imbue the lives of the next generation of space engineers and researchers with meaning.

On a personal note

Gennady Ivanovich Padalka is a Hero of Russia and currently holds the world record for the total duration of space flights. His record includes five long-duration missions to near-Earth orbit. In total, he spent 878 days in space, venturing outside the spacecraft ten times. Before joining the Cosmonauts Corps, he was a military pilot. While a cosmonaut, he also studied at the UNESCO International Center, earning a degree as an “engineer-ecologist” and a Master’s degree in Environmental Management. I have known him for many years. I have always admired not only his vast knowledge, unique experience, and ability to think big, but also Gennady Ivanovich’s integrity, his fearlessness, and his readiness to speak the truth, including to his superiors. Three years ago, due to professional redundancy, Padalka had to leave the Cosmonauts Corps and the Cosmonaut Training Center…

Source: Trud (

)

June 05 2020, 19:51

An interesting opinion from an “insider”, astronaut Padalka:

“Dragon” has flown? Let’s not dramatize

As a professional, I am impressed and sincerely happy for our ISS partners. I wouldn’t describe the recent event as “the beginning of a new era in space exploration.” However, it’s undoubtedly a breakthrough for both a private company and for America as a whole. They have regained their position in crew delivery that was lost over the last decade. Investing in private rocketry and space exploration seems to be paying off. It is to be hoped that this example will finally spur our own space industry.

Surprisingly, a small private company, SpaceX (8,000 employees), has matched the entire Russian Federation in terms of manned spaceflight capacity. Elon Musk has managed to break our monopoly on manned flights to the ISS. This is a case where private entrepreneurship is outperforming state companies and state corporations. They clearly lag behind in human resources, engineering developments, and the speed of implementation. Additionally, state companies are more financially wasteful due to the excessive number of redundant bureaucrats and managers.

A few words about the spacecraft itself. All around are the latest technical developments and achievements. An endless number of innovative solutions: in the architecture of the spacecraft, its exterior design, interior construction and ergonomics, spacesuits, touch screen displays, and the graphic interface showing the crew’s communication with the ship’s systems. The large internal volume and level of comfort are impressive.

This is not just the launch of a new spacecraft, but a real step towards lunar and Martian programs. In my view, a point has been set in the space race between our countries in two respects. First, the programs have become international, as we have long been collaborating rather than competing. Second, with the launch of the new spacecraft and real progress in the lunar program, the Americans have no competitors. No one is breathing down their neck.

Our technological backwardness, lack of clear goal-setting in space exploration, the state sector of the economy with no competition, a shortage of highly skilled professionals in the industry, and other negative trends have led to the fact that, having started building a new spacecraft a year earlier than Musk, we succeeded only in renaming it—from “Federation” to “Eagle.” Earlier, we had designed the multifunctional, reusable spacecraft “Clipper,” but after six years, Roscosmos virtually shut down the project.

I find the humor of our leaders in such a situation amusing. It’s funny to watch the recent banter about the “trampoline.” As for the “rescue of the Russian rocket and space industry from American sanctions” in 2014 and mutual threats, they are too exaggerated and contrived. Dmitry Rogozin was likely misled by advisors and consultants at the time about our self-sufficiency and independence on the ISS. This is not the first time I’ve spoken about this.

At that point, the Americans depended on us not only for crew delivery to the ISS but also in terms of several technical aspects. We, in turn, depended significantly on them, and we still do to this day. Here are a few examples. For motion control systems that manage the station’s orientation, only the American side has gyrodynes (huge gyroscopes), while the engines that unload them operate in the Russian segment. They work in tandem—gyrodynes without engines are just space station scrap metal, and relying only on our engines for station orientation would be too fuel costly. The ISS wouldn’t last a month.

Lacking the long-promised, yet-to-be-orbited Russian scientific and power module (NEM) with its powerful solar panels, we get nearly half the necessary electrical power for the Russian segment from our partners. For continuous control (telemetry) and management of the Russian segment systems (including voice communications through the TsUP-ISS channel), Russians use the partners’ communications facilities. The partners’ systems partially operate in the Russian segment to support crew life as well. All equipment for psychological support—including mobile phone service, video conferences with families, internet—is provided by partners. The element base of the station’s computer network, including the entire Russian segment, is almost entirely not our own… And there are many such examples.

However, even a non-specialist understands: in this space project, our countries are interdependent. The relationships have been built and are built on full trust, especially concerning safety and supporting the well-being of crews aboard the ISS. But we must honestly acknowledge: now, after the Americans created their own crew transport system, the balance of interdependence is clearly not in our favor. In general, another transport system for sending crews to the ISS creates a reserve and enhances reliability in case of unexpected circumstances. For the past 20 years, there have been enough incidents involving both us and our partners. Collaborative cooperation is much more beneficial than mutual reproaches and threats.

What’s next? In the first half of next year, another manned spacecraft, Boeing’s Starliner, will begin flying to the ISS. The demand for our “Soyuz” and for delivering tourists might finally end, and Roscosmos will lose a significant part of its income.

In late May, the Americans began the final test (Green Run Test) of their super-heavy carrier. For the second half of 2021, its launch is scheduled as part of the Artemis 1 mission. NASA plans to conduct an unmanned lunar flyby with the Orion spacecraft. Artemis 3 mission involves the first astronaut landing on the moon in 2024/2025.

All the elements necessary for landing a person on the moon have already been worked out by them and are at the stage of construction or pending pertinent contracts in the near future. Next, NASA plans to organize joint missions with partners. The task is interesting and topical: to create a base on the moon suitable for long-term living. The prospective lunar orbital station, Lunar Gateway, which according to the partners’ plans, will replace the ISS, is intended to help implement the project.

It is obvious that we are unlikely to be in high demand as a full-fledged partner in future projects. However, we should not dramatize the situation by saying we will be “cast aside in the history of space.” We should take part in the project of the lunar station. We are not yet capable of building and designing quickly, and there is no one to do it. We do not have a heavy rocket or a spacecraft for bringing our crews to the lunar station either. It’s not the time now to make counter-demands and figure out the role, whether primary or secondary, our participation will be.

A joint project with partners will help us maintain the potential of the space industry, give us the opportunity to learn a lot, eventually prepare new engineering personnel, and imbue the lives of the next generation of space engineers and researchers with meaning.

On a personal note

Gennady Ivanovich Padalka is a Hero of Russia and currently holds the world record for the total duration of space flights. His record includes five long-duration missions to near-Earth orbit. In total, he spent 878 days in space, venturing outside the spacecraft ten times. Before joining the Cosmonauts Corps, he was a military pilot. While a cosmonaut, he also studied at the UNESCO International Center, earning a degree as an “engineer-ecologist” and a Master’s degree in Environmental Management. I have known him for many years. I have always admired not only his vast knowledge, unique experience, and ability to think big, but also Gennady Ivanovich’s integrity, his fearlessness, and his readiness to speak the truth, including to his superiors. Three years ago, due to professional redundancy, Padalka had to leave the Cosmonauts Corps and the Cosmonaut Training Center…

Source: Trud (

)