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#interstellar

3 posts3 participants1 post today
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Hervé Cottin

#Interstellar est un film vraiment passionnant. On y parle beaucoup de physique, de relativité, du temps... Et on a beaucoup parlé de ce film à ce sujet.
Mais la quête principale est celle d'une planète habitable, donc au cœur des thématiques de l' #exobiologie. Pour Allociné, j'ai essayé de porter un regard exobiologique sur les 3 planètes visitées au cours du film...

Voici le résultat : youtube.com/watch?v=ODTY-ho6Ib

YouTubeUn Astrochimiste analyse les planètes dans INTERSTELLARBy AlloCiné
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KilleansRow 🇺🇲 🇺🇦🍀

1/2 Notes on #UAP Discussions : From the standpoint of #Physics #Interstellar travel via physical craft with reasonable transit times for both craft and passengers invokes a relativistic firewall involving craft mass and required energy densities at significant fractions of the speed of light.Advanced knowledge of #Spacetime dynamics and topologies are one way through that firewall. Two stages of development invoke what are locally or globally #Interdimensional technologies for warping-

Public
Daniel Fischer

Neural-Rendezvous - Provably Robust Guidance and Control to Encounter Interstellar Objects / Information-Optimal Multi-Spacecraft Positioning for Interstellar Object Exploration: arxiv.org/abs/2208.04883 / arxiv.org/abs/2411.09110 -> Concept for #interstellar object encounters developed, then simulated using a spacecraft swarm: aerospace.illinois.edu/news/74

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arXiv.orgNeural-Rendezvous: Provably Robust Guidance and Control to Encounter Interstellar ObjectsInterstellar objects (ISOs) are likely representatives of primitive materials invaluable in understanding exoplanetary star systems. Due to their poorly constrained orbits with generally high inclinations and relative velocities, however, exploring ISOs with conventional human-in-the-loop approaches is significantly challenging. This paper presents Neural-Rendezvous -- a deep learning-based guidance and control framework for encountering fast-moving objects, including ISOs, robustly, accurately, and autonomously in real time. It uses pointwise minimum norm tracking control on top of a guidance policy modeled by a spectrally-normalized deep neural network, where its hyperparameters are tuned with a loss function directly penalizing the MPC state trajectory tracking error. We show that Neural-Rendezvous provides a high probability exponential bound on the expected spacecraft delivery error, the proof of which leverages stochastic incremental stability analysis. In particular, it is used to construct a non-negative function with a supermartingale property, explicitly accounting for the ISO state uncertainty and the local nature of nonlinear state estimation guarantees. In numerical simulations, Neural-Rendezvous is demonstrated to satisfy the expected error bound for 100 ISO candidates. This performance is also empirically validated using our spacecraft simulator and in high-conflict and distributed UAV swarm reconfiguration with up to 20 UAVs.
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The Hollwood Gossips

Anne Hathaway Biography, Height, Age, Family, Boyfriend, Net Worth and Career

Anne Hathaway the well-known American actress has starred in a variety of film genres and received numerous accolades. Both on and off film, she is renowned for her charm, grace, and adaptability.

biographygen.com/anne-hathaway/

#AnneHathaway #Actress #Hollywood #FilmStar #LesMiserables #TheDevilsWearPrada #Interstellar #Ocean's8 #PrincessDiaries #OscarWinner #RedCarpet #CelebrityStyle #WomenInFilm #Inspiration

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