Tuesday, October 21, 2025

Mysterious wreckage in Outback is likely Chinese rocket | SpaceX may lose manned Artemis 3 contract with NASA | Artemis 2 capsule stacked for 2026 launch

NASA trivia quiz | The space race for low-Earth orbit
Created for znamenski.spacecom@blogger.com | Web Version
 
October 21, 2025
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The Launchpad
 
It's Tuesday space fans!
Our newsroom is busy as we bring you all things space news and science, starting with NASA stacking the Orion capsule for the Artemis 2 mission onto the rocket in preparation for the 2026 launch. 

Other stories for today include Reflect Orbital planning on launching 4,000 space mirrors, a mysterious wreckage in Australia is likely a Chinese rocket and a look at the other space race for real estate in low-Earth orbit. 

For Trivia Tuesday, our space quiz of the week is all about the history of NASA. Test your smarts now! 

We have all that and more for your daily read. 
Keep looking up, 
Kenna 
Content Manager, Space.com
 
Is space warfare already here? Experts say it's real
Is space warfare already here? Experts say it's real
"The Russians and the Chinese are demonstrating more sophisticated orbital maneuvering abilities. There's no denying that."
 
Read More
 
NASA stacks Artemis 2 capsule on SLS for 2026 launch
NASA stacks Artemis 2 capsule on SLS for 2026 launch
The rocket stands whole.
 
Read More
 
Space quiz! How much has light pollution risen per year thanks to the introduction of LEDs?
Click here for the answer!
Vote10% per year
Vote20% per year
Vote50% per year
Vote75% per year
 
 
 
 
Space Deal of the Day
 
Streaming deals: Watch great sci-fi content for less
Streaming deals: Watch great sci-fi content for less
These are the best streaming deals on the market, so you can watch upcoming sci-fi movies and shows or relive the classics without breaking the bank.
 
Read More
 
 
 
 
Spaceflight
 
NASA may drop SpaceX from Artemis 3 over delays
NASA may drop SpaceX from Artemis 3 over delays
"I'm gonna open up the contract. I'm gonna let other companies compete with SpaceX."
 
Read More
 
Wreckage in Outback likely Chinese rocket debris
Wreckage in Outback likely Chinese rocket debris
"It could actually be (a significant part of) the upper stage itself."
 
Read More
 
 
 
 
Science & Astronomy
 
Evidence of ancient 'Proto-Earth' found beneath us
Evidence of ancient 'Proto-Earth' found beneath us
"This is maybe the first direct evidence that we've preserved the proto-Earth materials."
 
Read More
 
Virtual particles: A physics trick that shapes reality
Virtual particles: A physics trick that shapes reality
Physicist Richard Feynman invented them to describe the interactions between real particles.
 
Read More
 
 
 
 
Technology
 
Low-Earth orbit: The new space race for dominance
Low-Earth orbit: The new space race for dominance
But what's the point of having religious messages in space when there's no-one there to read them?
 
Read More
 
Company's plan for 4,000 space mirrors alarms experts
Company's plan for 4,000 space mirrors alarms experts
Reflect Orbital says their light-on-demand idea has generated significant interest from commercial and government customers.
 
Read More
 
 
 
 
Trivia Tuesday: Quiz of the week
 
NASA'd too hard: The ultimate NASA trivia quiz
NASA'd too hard: The ultimate NASA trivia quiz
From moon landings to Mars rovers, NASA has shaped humanity's journey into the cosmos.
 
Read More
 
 
 
 
Today in Space
 
On this day: Oct. 21, 2008: India launches moon mission
On this day: Oct. 21, 2008: India launches moon mission
On Oct. 21, 2008, the Indian Space Research Organization launched its first mission to the moon.
 
Read More
 
Space photo of day: JAXA releases CubeSats from ISS
Space photo of day: JAXA releases CubeSats from ISS
All jokes aside, there is some serious science happening in this image.
 
Read More
 
 
 
 
Editor's Note
 
Correction
Thank you to those who caught the error in yesterday's newsletter. SpaceX launched its 10,000th Starlink satellite not its 100,000th satellite. Clearly more coffee was needed for the making of this newsletter. 
Thanks! 
 
 
Stay up-to-date on all things space science, news, and entertainment by subscribing to our newsletters.
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Seminars Digest, Vol 78, Issue 6

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Today's Topics:

1. Friday 24.10.2025 (info+seminars@itp.ac.ru)
2. Thursday 23.10.2025 - ITP/CAS Colloquium (info+seminars@itp.ac.ru)


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Message: 1
Date: Tue, 21 Oct 2025 07:02:01 +0000
From: info+seminars@itp.ac.ru
To: staff@itp.ac.ru, students@itp.ac.ru, seminars@itp.ac.ru
Subject: [Landau ITP Seminars] Friday 24.10.2025
Message-ID: <v4zGCurTjgwu7cHfoBGF5l4V29LHQwU59I1zkCWhoU@wwwserv2>
Content-Type: text/plain; charset=UTF-8

Уважаемые коллеги!

На заседании Ученого совета ИТФ в пятницу 24.10 будет заслушан 1 доклад:
11:30 Николай Гиппиус (Сколтех)
Метод резонансного подпространства для составных фотонно-кристаллических систем

В докладе рассматривается метод построения резонансного приближения для матрицы рассеяния. На примере резонансных фотонных структур, допускающих разбиение на две нерезонансные подсистемы, продемонстрирована возможность построения регулярной аппроксимации положений резонансов составной системы. Все элементы резонансного представления определяются прямым расчётом в ограниченном числе точек пространства параметров и в дальнейшем допускают достаточно точную аппроксимацию в более широкой области параметров задачи. Предложенный метод позволяет конструктивно выделить резонансную часть матрицы рассеяния и построить регулярные схемы аппроксимации для расчёта оптических свойств фотонных структур, не требующих многочисленных и ресурсоёмких вычислений.

Рассматриваемые системы фотоники представляют собой слоистые структуры с периодической модуляцией диэлектрической проницаемости в плоскости слоёв и могут быть изготовлены с использованием хорошо развитых микро и нано технологий. Возможность управления дисперсионными свойствами этих структур за счёт модификации архитектуры элементарной ячейки открывает широкие возможности для применения этих систем в качестве базовых элементов фотоники.

Модальный метод Фурье (FMM) (или метод матрицы рассеяния) является очень эффективным инструментом для изучения оптических свойств многослойных вертикально-инвариантных периодических структур. Однако для задач, требующих интегрирования по волновым векторам в плоскости структуры, необходимость многочисленных однотипных расчётов снижает эффективность этого метода. Рассматриваемый в докладе подход существенно расширяет возможности FMM.

ID и пароль онлайн-трансляций в Zoom те же, что и для предыдущих трансляций семинаров и докладов на Ученом совете:
https://zoom.us/j/96899364518?pwd=MzBsR2lYT0lYL2x2b1oyNU9LeWlWUT09
Meeting ID: 968 9936 4518
Пароль: 250319

При числе желающих не менее 5 будет организован автобус.
Для записи на автобус из Москвы в Черноголовку необходимо до 17:00 четверга отправить письмо на адрес электронной почты bus@itp.ac.ru
После этого записавшимся до 20:00 поступит подтверждение об отправке или неотправке автобуса в зависимости от числа записавшихся.
Запись на обратный автобус - на Ученом совете.

------------------------------

Message: 2
Date: Tue, 21 Oct 2025 07:02:02 +0000
From: info+seminars@itp.ac.ru
To: staff@itp.ac.ru, students@itp.ac.ru, seminars@itp.ac.ru
Subject: [Landau ITP Seminars] Thursday 23.10.2025 - ITP/CAS
Colloquium
Message-ID: <2dz6lzAPd1hhmpYugPMLxQyy2Ube9o6CcoyjA1yM@wwwserv2>
Content-Type: text/plain; charset=UTF-8

Уважаемые коллеги!

На онлайн коллоквиум по теоретической физике в четверг 23.10 будут заслушаны 2 доклада:

1) 10:00:00 по московскому времени: V.V. Lebedev (L.D. Landau Institute for Theoretical Physics, Russian Academy of Sciences)
Statistics of High Intensities of the Light Propagating in a Turbulent Fluid

We present an investigation into the statistical properties of light traveling through a turbulent medium. Specifically, we analyze the probability density function (PDF) of the light intensity I on a detector for different values of I and the beam path length. The PDF, P(I), exhibits two tails with stretched exponents smaller than one. This indicates a significantly higher probability of rare events with light intensities much greater than the average than would be predicted by a naive Gaussian estimate. We find that these rare events are caused by a randomly located lens in the light path, which allows us to predict the shape of bright spots on the detector.


Biography


Prof. V.V. Lebedev obtained a B.S. in Physics (1974) and an M.S. in Theoretical Physics (1976), both from the Moscow Institute of Physics and Technology. Later, he received his PhD in Theoretical Physics (1979) from the Landau Institute for Theoretical Physics. He has been a Corresponding Member of the Russian Academy of Sciences since 2003, a Chair Professor at the Moscow Institute of Physics and Technology since 2008, and a Principal Researcher at the Landau Institute for Theoretical Physics since 2019. He served as Director of the Landau Institute for Theoretical Physics (2003-2018). He has over 150 scientific publications, with research focusing on the theory of soft condensed matter, the theory of nonequilibrium dynamical phenomena (including turbulence), statistical theory, and theoretical biophysics.


Zoom: 863 6139 6152, Passcode: 690503


2) 11:00:00 по московскому времени: Shi-Zhao Wang (Institute of Mechanics, Chinese Academy of Sciences)
Vortex Dynamics and Unsteady Aerodynamics of Bat Flight

This talk elucidates the vortex-dominated flows and unsteady lift underpinning the high-performance flight of bats—the only mammals capable of active flapping flight. A key kinematic feature examined is the dynamic wingspan variation observed during flapping flight. Based on numerical simulations of flows over a slow-flying bat, it is found that the dynamically changing wingspan can significantly enhance the lift. Analysis of the resultant vortex structures and a decomposition of aerodynamic forces show that the enhancement is primarily attributable to an intensified leading-edge vortex system, whose strength is promoted by the dynamic wing morphing. A quantitative lift formulation developed for unsteady aerodynamic analysis under these conditions will also be presented.

Biography

Prof. Shi-Zhao Wang received his doctoral degree in fluid dynamics from University of Chinese Academy of Sciences in 2011. He is currently a professor at Institute of Mechanics, Chinese Academy of Sciences. His research focuses on unsteady aerodynamics, aeroacoustics, and biolocomotion. He has authored more than 90 peer reviewed papers in leading journals in fluid mechanics, including Annual Review of Fluid Mechanics, Journal of Fluid Mechanics, and Physical Review Fluids.

Zoom: 863 6139 6152, Passcode: 690503


Zoom meeting ID: 890 7187 2369
Пароль: 544845

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End of Seminars Digest, Vol 78, Issue 6
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