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    ztracené heslo?
    COMMANCHEDobyvani vesmiru a kosmonautika 🚀🛰️👩🏼‍🚀
    XCHAOS
    XCHAOS --- ---
    Too good to be true mezihvězdný pohon? článek se tváří seriozně, ale slyším o tom principu poprvé..
    Future interstellar rockets may use laser-induced annihilation reactions for relativistic drive - ScienceDirect
    https://www.sciencedirect.com/science/article/pii/S0094576520303179#!
    TOXICMAN
    TOXICMAN --- ---
    LUDO
    LUDO --- ---
    DZODZO
    DZODZO --- ---
    jo to som pozeral minuly rok, ked mali nejake to kulate vyrocie
    TOXICMAN
    TOXICMAN --- ---
    Now that NASA’s James Webb Space Telescope has been assembled into its final form, testing teams seized the unique opportunity to perform a critical software and electrical analysis on the entire observatory as a single, fully connected vehicle.

    Known as a Comprehensive Systems Test or CST, this was the first full systems evaluation that has ever been run on the assembled observatory, and one of the final first-time activities the team will perform. Similar performance evaluations have been completed in Webb’s history, using simulations and surrogates to infer data about pieces of the spacecraft that had not yet been assembled. Now that Webb is fully built, simulations and simulators are no longer needed, and engineers can confidently assess both its software and electronic performance.

    More on this critical testing milestone here: https://go.nasa.gov/3er2nWX

    Image credit: NASA/Chris Gunn

    TOXICMAN
    TOXICMAN --- ---
    IST (Integrated Systems Test) completed successfully. #MarsPerseverance
    TOXICMAN
    TOXICMAN --- ---
    @torybruno
    Spacecraft hoist and mate is complete. We’re going to Mars. #marsperseverance
    SEZI
    SEZI --- ---
    https://www.roscosmos.ru/28777/ 10:03 via denikn.cz
    V Moskvě byl zadržen poradce šéfa ruské kosmické agentury Roskosmos, bývalý novinář Ivan Safronov. Je podezřelý z vlastizrady. (Roskosmos)

    Podle https://www.swissinfo.ch/...of-russian-space-agency-detained-on-treason-charges---roscosmos/45885766 ale It said the detention of Ivan Safronov, a former journalist specialising in military affairs, was not linked to his work with the space agency where he has worked as an advisor to General Director Dmitry Rogozin.
    KULA
    KULA --- ---
    Scott Manley to pitvá na svém twitteru celý den. Baterie (3ks celkem na 2nd stage) dávají 100kW do turbopumpy. Zmáknout swap (přechod na 3., odhození vyobrazeného páru) bez poklesu výkonu bude dost klíčové tajemství Rocket Labu.
    Jedna věc je řízeně přiškrtit výkon, druhá když to zasambuje samo. Proto mě hned zajímalo, co se děje v komoře.
    SEJDA
    SEJDA --- ---
    KULA: tak i podle drbu nastava staging baterii az po 6. minute, tedy problem nastal kdyz jeste stale pouzivali stare baterie
    LADINEK
    LADINEK --- ---
    CHEVALIER: jop, mel by mit jinak reseny kola

    Reinventing the Wheel (for Mars) - Science Friday
    https://www.sciencefriday.com/educational-resources/redesigning-the-wheel-for-mars/
    CHEVALIER
    CHEVALIER --- ---
    LADINEK: ...doufám že tam dali pevnější kola...
    KULA
    KULA --- ---
    SEJDA: nevěděl jsem, že dělají microstaging.
    btw dvojce baterií zde:
    SEJDA
    SEJDA --- ---
    KULA: prepnou napajeni na posledni baterii. Zkontroluji, ze uz zadny proud z tech dvou, do ted pouzivanych, baterrii neproudi. Provedou odpojeni a odhodi je.
    Je to sice unikum rakety Elektron, ale to mne prijde, ze je pravdepodobnejsi, ze selhala navigace, resp. regulace tahu, to jsou o mnoho konplexnejsi systemy. Vsak uvidime.
    KULA
    KULA --- ---
    https://twitter.com/RocketLab/status/1279531664759091200?s=19

    2nd stage to nedal. Musím se techniku Rocket Labu doučit, přestože je pojem battery swap celkem jasný, tak by mě zajímalo, co to znamená pro čerpadla nebo spalovací komoru.
    RLSO
    RLSO --- ---
    NASA Explains Moon Return Plans in Stunning Animated Short
    http://www.youtube.com/watch?v=qMMguZLZxhk
    TOXICMAN
    TOXICMAN --- ---
    Astronauté Bob Behnken a Chris Cassidy se už připravují na dnešní EVA a mají oblečené skafandry. Dění můžete sledovat živě na NASA TV.
    NASA Live: Official Stream of NASA TV
    https://www.youtube.com/watch?v=21X5lGlDOfg
    TOXICMAN
    TOXICMAN --- ---
    Apollo 15 in 60fps: Lunar Landing
    http://www.youtube.com/watch?v=ggrctQg4I_c
    LADINEK
    LADINEK --- ---
    Kompletace Perseverance ;)

    VYHULENY_UFO
    VYHULENY_UFO --- ---
    https://www.nasa.gov/image-feature/goddard/2020/hubble-makes-a-bright-find
    Seen here in incredible detail, thanks to the NASA/ESA Hubble Space Telescope, is the starburst galaxy formally known as PLCK G045.1+61.1. The galaxy, which appears as multiple reddish dots near the center of the image, is being gravitationally lensed by a cluster of closer galaxies, also seen in the image.

    Gravitational lensing occurs when a large distribution of matter, such as a galaxy cluster, sits between Earth and a distant light source. As space is warped by massive objects, the light from the distant object bends as it travels to us, creating stretched, magnified and sometimes multiple images of the lensed object. This effect was first predicted by Einstein’s general theory of relativity.

    From 2009 to 2013, the European Space Agency’s Planck space observatory captured multiple all-sky surveys. In the course of these surveys, with complementary observations by the Herschel Space Observatory, Planck discovered some of the brightest gravitationally lensed, high-redshift galaxies in the night sky.

    It was during the study of these Planck-Herschel selected sources using Hubble that the optical starlight emitted from this ultra-bright galaxy was found.

    Text credit: ESA (European Space Agency)
    Image credit: ESA/Hubble & NASA, B. Frye

    Last Updated: June 16, 2020


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