JY'J' Kim - 05.02.1984

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Załoga ISS rozbudowuje obecny sprzęt, demonstrując tworzenie złotych nanosfer w warunkach mikrograwitacji.
Są one większe i bardziej jednorodne niż ich ziemskie odpowiedniki i znajdują zastosowanie w diagnostyce i leczeniu raka oraz w ulepszonych lekach.
Astronauci w tym celu pobierają próbki z zamrażarki MELFI i umieszczają je w przemysłowych kasetach krystalizacyjnych, a następnie są dostarczane na Ziemię w celu przeprowadzenia dalszych analiz.

Jonny Kim @JonnyKimUSA 10:48 PM · May 21, 2025
M+38: One of the experiments we’re conducting on the @Space_Station is to expand on current hardware, demonstrating the creation of golden nanospheres under microgravity conditions, which are larger and more uniform than their Earth-bound versions, and have applications in cancer diagnostics and treatment and improved pharmaceuticals.

We obtain our samples from the MELFI freezer and grow them into our Industrial Crystallization Cassettes, and will package them for return on Spx-32 for additional analysis.

https://twitter.com/JonnyKimUSA/status/1925292607858778462

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(ciąg dalszy): Temperatura w zamrażarce utrzymuje się na poziomie -98 °C.
Otwarcie MELFI to jak podmuch arktycznego powietrza prosto w twarz. Temperatura w zamrażarce utrzymuje się na poziomie -98 stopni Celsjusza!
Na filmie widać skrupulatne kontrole i ponowne kontrole próbek oraz procedur.

Jonny Kim @JonnyKimUSA 10:56 PM · May 21, 2025
M+38 (continued): Opening up MELFI is like getting a blast of arctic air in your face. The freezer is kept to -98 deg C!

In the video you’ll see meticulous checks and rechecks of our samples and the procedures.

It seems slow, but being meticulous to conduct experiments without mistakes is crucial to ensure we are doing our best job to enable the science results that so many research teams on the ground have worked years to plan for.

It’s a huge honor for us on the ISS to conduct their experiments and we couldn’t do our jobs without amazing ground support.

https://x.com/JonnyKimUSA/status/1925294627701104910

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Procedury załadunkowe.

Jonny Kim @JonnyKimUSA 6:15 PM · May 22, 2025
M+40: So what is it like to load a space cargo vehicle? It’s not too different from what you would do to pack for a move or ship a lot of cargo. It reminds me of building pallets before deployments.   

First, we work off a synchronized checklist that our amazing @NAS inventory stowage teams develop, find the items in the @Space_Station that are called out, double check that the serial numbers and barcodes match, pack the items and if necessary cushion them with bubble wrap and foam, and load them into the cargo space vehicle.   

The cargo vehicle’s center of gravity and mass calculations for re-entry depend on everything being packed in the correct order and orientation, so attention to detail matters.   

Finally, the straps have to be tightened and finished off with half hitches.   

Some of the precious cargo returning to Earth on Spx-32 are our science experiments, where ground teams eagerly await to get the experiments to the correct labs for additional research and analysis. 

It’s a lot of work but also fun, and we have a great team on-board and on the ground.

https://x.com/JonnyKimUSA/status/1925586396607066343

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Jednym z eksperymentów, jest sprawdzenie, jak ogień zachowuje się w warunkach obniżonej grawitacji.

Jonny Kim @JonnyKimUSA 8:34 PM · May 23, 2025
M+35: Did you know the @Space_Station has multiple combustion chambers? One of the experiments we’re conducting is to see how fire behaves differently in reduced gravity conditions.

Fire is a serious hazard in spaceflight, especially when operating in elevated oxygen concentrations.

This combustion chamber is called SoFIE (solid fuel ignition and extinction), and it helps us evaluate and test the combustion properties of various materials in microgravity so we can better understand these material properties and know what to use (and not use) for future deep space exploration missions.

https://x.com/JonnyKimUSA/status/1925983587398017532

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Jeden z eksperymentów dotyczy SANS (Space Associated Neuro-Ocular Syndrome).
To unikatowe schorzenie obserwowane wyłącznie u astronautów narażonych na długotrwałe działanie mikrograwitacji. Nie ma odpowiednika na Ziemi (ale dla lekarzy jego objawy są podobne do idiopatycznego nadciśnienia śródczaszkowego).
Schorzenie to może wpływać na wzrok i strukturę oka.

Jonny Kim @JonnyKimUSA 10:00 PM · May 28, 2025
M+43: Have you heard of Space Associated Neuro-Ocular Syndrome (SANS)? It’s a unique condition only observed in astronauts exposed to long durations of microgravity, there is no terrestrial equivalent (but for the docs out there, its features are similar to idiopathic intracranial hypertension).

The condition can affect vision and eye structure, and it’s important we understand the condition before deep exploration missions.

One theory is that the fluid shifts that occur in the body due to microgravity are the cause, as fluids shift toward the head potentially increasing the pressure against our eyes and the precious nerves and tissue that support them.

One of the interesting experiments we are conducting is to see whether wearing tight thigh cuffs, thereby reducing the volume of blood returning to the heart, can decrease fluid shifts and pressure to the head. We work with a team at
@NASA to compare different metrics across ultrasound, optical coherence tomography (think of a CT scan for the eye but without radiation) and tonometry (poking the eye to get eye pressures) to see what changes if any occur with and without a thigh cuff.

My partner, @AstroAnnimal, a great ultrasound and OCT operator, spent the better part of a day poking my eye, helping me probe my blood vessels, and scan my eyeballs. It’s a long day, but as our commander, @Astro_Onishi, says, “It’s for science.”

https://x.com/JonnyKimUSA/status/1927817302206038408