How geomagnetic storms affect the loss of Starlink satellites in February 2022? by Nizam Ahmad, La Ode Muhammad Musafar Kilowasid, Hanif Fakhrurroja, Neflia, Abdul Rachman, Asnawi Husin, Haries Fathoni

“…Abstract On February 8, 2022, approximately 40 of the 49 Starlink satellites were reported to have lost altitude, leading to atmospheric re-entry. SpaceX reported that the orbital decay on Starlink satellites was considered to be linked to a geomagnetic storm that was initiated on February 3, 2022. …”
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Виклики і розвиток авіоніки: система переривання польоту by Валерій Мазуренко

“…Потім вимоги безпеки були змінені на основі теорії управління ризиками, що дозволило Space X розробити революційну нову систему FTS, яка є автономною, автоматичною, надійною та використовує два незалежні канали для прийняття рішення про припинення польоту. …”
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The Daytime Variations of Thermospheric Temperature and Neutral Density Over Beijing During Minor Geomagnetic Storm on 3–4 February 2022 by Shaoyang Li, Zhipeng Ren, Tingting Yu, Guangming Chen, Guozhu Li, Biqiang Zhao, Xinan Yue, Yong Wei

“…Abstract On 3 February 2022, 38 satellites launched by SpaceX re‐entered the atmosphere and were subsequently destroyed. …”
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An Initial Validation of the NASA TROPICS Pathfinder Microwave Radiometer Observations by Amelia Gagnon, Samantha N. Hasler, Juliana Chew, William J. Blackwell, R. Vincent Leslie, Michael DiLiberto, Kerri Cahoy

“…The NASA Time-Resolved Observations of Precipitation structure and storm Intensity with a Constellation of Smallsats (TROPICS) Pathfinder CubeSat was placed into a sun-synchronous orbit by a SpaceX Falcon 9 launch vehicle during the June 30, 2021 Transporter-2 rideshare mission. …”
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Comparison of Empirical and Theoretical Models of the Thermospheric Density Enhancement During the 3–4 February 2022 Geomagnetic Storm by Jianhui He, Elvira Astafyeva, Xinan Yue, Nicholas M. Pedatella, Dong Lin, Timothy J. Fuller‐Rowell, Mariangel Fedrizzi, Mihail Codrescu, Eelco Doornbos, Christian Siemes, Sean Bruinsma, Frederic Pitout, Adam Kubaryk

“…Abstract On 3 February 2022, at 18:13 UTC, SpaceX launched and a short time later deployed 49 Starlink satellites at an orbit altitude between 210 and 320 km. …”
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The Thermosphere Is a Drag: The 2022 Starlink Incident and the Threat of Geomagnetic Storms to Low Earth Orbit Space Operations by T. E. Berger, M. Dominique, G. Lucas, M. Pilinski, V. Ray, R. Sewell, E. K. Sutton, J. P. Thayer, E. Thiemann

“…Abstract On 03 February 2022, SpaceX launched 49 Starlink satellites, 38 of which re‐entered the atmosphere on or about 07 February 2022 due to unexpectedly high atmospheric drag. …”
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On the Scottish Book Problem 155 by Mazur and Sternbach by Mori, Michiya

“…Problem 155 of the Scottish Book asks whether every bijection $U\colon X\rightarrow Y$ between two Banach spaces $X, Y$ with the property that, each point of $X$ has a neighborhood on which $U$ is isometric, is globally isometric on $X$. …”
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Stability Theory for Nullity and Deficiency of Linear Relations by Silas Luliro Kito, Gerald Wanjala

“…Let A and B be two closed linear relations acting between two Banach spaces X and Y, and let λ be a complex number. We study the stability of the nullity and deficiency of A when it is perturbed by λB. …”
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On the range of the derivative of a smooth mapping between Banach spaces by Robert Deville

“…We survey recent results on the structure of the range of the derivative of a smooth mapping f between two Banach spaces X and Y. We recall some necessary conditions and some sufficient conditions on a subset A of ℒ(X,Y) for the existence of a Fréchet differentiable mapping f from X into Y so that f′(X)=A. …”
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Mutually Compactificable Topological Spaces by Martin Maria Kovár

“…Two disjoint topological spaces X, Y are (T2-) mutually compactificable if there exists a compact (T2-) topology on K=X∪Y which coincides on X, Y with their original topologies such that the points x∈X, y∈Y have open disjoint neighborhoods in K. …”
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Dynamic Processes, Fixed Points, Endpoints, Asymmetric Structures, and Investigations Related to Caristi, Nadler, and Banach in Uniform Spaces by Kazimierz Włodarczyk, Robert Plebaniak

“…In uniform spaces X, D with symmetric structures determined by the D-families of pseudometrics which define uniformity in these spaces, the new symmetric and asymmetric structures determined by the J-families of generalized pseudodistances on X are constructed; using these structures the set-valued contractions of two kinds of Nadler type are defined and the new and general theorems concerning the existence of fixed points and endpoints for such contractions are proved. …”
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Controllability of Impulsive Neutral Functional Differential Inclusions in Banach Spaces by X. J. Wan, Y. P. Zhang, J. T. Sun

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