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#interstellar

2 posts2 participants0 posts today
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Nowhere Girl

It's not that Krista didn't believe in ghosts. But unlike in stories, ghosts didn't appear and wail and tell you all about their problems. That would be too convenient.

For all she knew, some of the Axxians were trapped in hyperspace and trying to contact her, tapping in Morse code, trying to communicate some complicated, higher dimensional math that would set them free.

"Pshaw," she said. That sounded stupid, even by the standards of spacer legends.

#writing#interstellar
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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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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

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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Mikko Tuomi

Interstellar material has been discovered in our Solar System, yet its origins and details of transport are unknown.

But how much of that #interstellar matter originates in the nearest #star system, the α Centauri triple system?

If α Centauri ejects material similarly to own Solar System, the current number of α Centauri particles larger than 100 m in diameter within the Oort Cloud is a million.

But only one of them can be expected within 10 AU.

#astronomy #panspermia
arxiv.org/abs/2502.03224

arXiv.orgA Case Study of Interstellar Material Delivery: α CentauriInterstellar material has been discovered in our Solar System, yet its origins and details of its transport are unknown. Here we present $α$ Centauri as a case study of the delivery of interstellar material to our Solar System. $α$ Centauri is a mature triple star system that likely harbours planets and is moving towards us with the point of closest approach approximately 28,000 years in the future. Assuming a current ejection model for the system, we find that such material can reach our Solar System and may currently be present here. The material that does reach us is mostly a product of low ($<2$ km/s) ejection velocities, and the rate at which it enters our Solar System is expected to peak around the time of $α$ Centauri 's closest approach. If $α$ Centauri ejects material at a rate comparable to our own Solar System, we estimate the current number of $α$ Centauri particles larger than 100 m in diameter within our Oort Cloud to be $10^{6}$, and during $α$ Centauri 's closest approach, this will increase by an order of magnitude. However, the observable fraction of such objects remains low as there is only a probability of $10^{-6}$ that one of them is within 10 au of the Sun. A small number ($\sim 10$) meteors greater than 100 micrometers from $α$ Centauri may currently be entering Earth's atmosphere every year: this number is very sensitive to the assumed ejected mass distribution, but the flux is expected to increase as $α$ Centauri approaches.
Continued thread
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Jyoti Mishra

When my mate and I drove to Manchester IMAX in 2014 to see this, I was a different person. I had two living parents, was way healthier, way less mental. It was pre-Brexit, pre-Trump, pre-Covid.

And yet, like #Interstellar itself, I am still fiercely hopeful.

"Les gens sont formidables."

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