• úvod
  • témata
  • události
  • tržiště
  • diskuze
  • nástěnka
    • přihlásit
    registrace
    ztracené heslo?
    VIRGOCosmos In Brief - Aktualní novinky vesmírného výzkumu v kostce
    XCHAOS
    XCHAOS --- ---
    +3
    Patterns Formed by Spiral Galaxies Suggest The Universe's Structure Isn't Totally Random
    https://www.sciencealert.com/...-spin-directions-of-spiral-galaxies-suggest-the-axis-of-evil-is-real
    ATOMIKS
    ATOMIKS --- ---
    +5
    Jak během dlouhodobého pobytu ve vesmíru co nejefektivněji recyklovat moč? A jak imunitní systém reaguje na specifické podmínky během kosmického letu? Biologické experimenty, které nám pomohou nalézt na tyto otázky odpovědi, připravujeme ve švýcarském centru BIOTESC. Projekty Urinis A, Xenopus a Human Bone Marrow Model proběhnou na vesmírné stanici ISS v inkubátoru Kubik pravděpodobně v letech 2023–2024.

    Z českého pohledu jsou projekty zajímavé i tím, že se na nich podílí česká firma SAB Aerospace, která navrhuje a vyrábí kartuše, ve kterých se biologický materiál bude pěstovat.

    Nové projekty pro ISS: efektivní recyklace moči a imunita ve vesmíru - Časopis Vesmír
    https://vesmir.cz/.../2020/11/nove-projekty-pro-iss-efektivni-recyklace-moci-imunita-ve-vesmiru.html
    ATOMIKS
    ATOMIKS --- ---
    +1
    Two years ago, planetary scientists reported the discovery of a large saltwater lake under the ice at Mars’s south pole, a finding that was met with excitement and some scepticism. Now, researchers have confirmed the presence of that lake — and found three more.
    “From a thermal point of view, it has to be salty,” says Pettinelli.
    The presence of the Martian lakes themselves is also still debated.
    A Chinese mission that is on its way to Mars might offer one way to check the claims.
    https://www.nature.com/articles/d41586-020-02751-1
    XCHAOS
    XCHAOS --- ---
    +2
    Voyager Spacecraft Detect New Type Of Solar Electron Burst - SpaceRef
    http://spaceref.com/interstellar/voyager-spacecraft-detect-new-type-of-solar-electron-burst.html
    SEJDA
    SEJDA --- ---
    +1
    ESTEN: jenom do doby, nez odmontuji, ziskaji granty a pojedou od znova
    ESTEN
    ESTEN --- ---
    1 odpověď+3
    Arecibo konci :(

    https://www.technologyreview.com/...he-second-largest-radio-telescope-in-the-world-is-shutting-down/
    ATOMIKS
    ATOMIKS --- ---
    +7
    Nobelovu cenu za fyziku získali vědci Penrose, Genzel a Ghezová za výzkum černých děr | iROZHLAS - spolehlivé zprávy
    https://www.irozhlas.cz/veda-technologie/veda/nobelova-cena-2020-nominace-cerna-dira_2010061250_oro
    XCHAOS
    XCHAOS --- ---
    https://www.syfy.com/syfywire/so-astronomers-may-have-found-evidence-of-life-on-venus
    Their observations indicate a level of phosphine at 20 parts per billion (so, 20 molecules of phosphine out of a billion of everything else). That may sound low, but it turns out that from what we currently know, on Venus it's hard to make anywhere near that much. The phosphine was seen at altitudes of at least 50 km. The environment there is pretty hostile to phosphine, which would decompose fairly rapidly. They estimate that that it should all be gone in less than a thousand years at that level, and probably much faster.
    XCHAOS
    XCHAOS --- ---
    +1
    Phosphine on Venus: Possible sign of life stirs up heated debate
    https://www.nationalgeographic.com/...ce/2020/09/possible-sign-of-life-found-on-venus-phosphine-gas/
    XCHAOS
    XCHAOS --- ---
    +1
    https://medium.com/...-years-of-gravitational-waves-a-chronicle-of-strange-coincidences-7d22be19319d
    ESTEN
    ESTEN --- ---
    XCHAOS: bozi clanek, diky. Ale na jeho zaklade bych tvoje tvrzeni zlehka preformuloval: existuji fakt vazne pochyby, zda ty detektory vzdy fakt pozoruji to, co je prezentovano. Jde "jen" o diskuzi o false positives.
    XCHAOS
    XCHAOS --- ---
    1 odpověď+1
    ESTEN: ale jistě, ozvalo se ze sluchátka:
    https://twitter.com/skdh/status/1301726197328609280
    ESTEN
    ESTEN --- ---
    1 odpověď
    XCHAOS: [citation fuckin' needed]
    XCHAOS
    XCHAOS --- ---
    1 odpověď
    SUMAC: problém těch dektorů gravitačních vln je, že ve vědecké komunitě existují fakt vážné pochyby, zda ty detektory fakt pozorují to, co je prezentováno, že pozorují....
    SUMAC
    SUMAC --- ---
    1 odpověď+1
    GW190814: Gravitational Waves from the Coalescence of a 23 Solar Mass Black Hole with a 2.6 Solar Mass Compact Object - IOPscience
    https://iopscience.iop.org/article/10.3847/2041-8213/ab960f

    tady je open access cely clanek. The source has the most unequal mass ratio yet measured with gravitational waves, ${0.112}_{-0.009}^{+0.008}$, and its secondary component is either the lightest black hole or the heaviest neutron star ever discovered in a double compact-object system.
    SUMAC
    SUMAC --- ---
    +2
    https://www.nytimes.com/...cience/black-hole-astronomy-physics.html?smtyp=cur&smid=tw-nytimesscience

    One and perhaps both of the colliding holes were too massive to have been produced by the collapse of a star, according to conventional theories. Moreover, the merger created an even larger black hole, 142 times as massive as the sun, belonging to a whole new category of intermediate-mass, or “missing link,” black holes never reliably seen before.
    XCHAOS
    XCHAOS --- ---
    +1
    Surprising number of exoplanets could host life | News
    https://news.ucr.edu/articles/2020/07/31/surprising-number-exoplanets-could-host-life
    XCHAOS
    XCHAOS --- ---
    +1
    Astronomers Detect Unexpected Class of Mysterious Circular Objects in Space
    https://www.sciencealert.com/mysterious-unidentified-circles-have-been-found-in-space
    GIOMIKY
    GIOMIKY --- ---
    +1
    Hubble Bubble letos slavi kulatych XXX
    https://www.nasa.gov/content/hubbles-30th-anniversary
    XCHAOS
    XCHAOS --- ---
    A tady ještě nějaké povídání k vodíkovému ledu. Docela zajímavý článek, teda... to je typ hmoty, o kterém jsem předtím skoro neslyšel (leda v souvislosti "kovový vodík by byl něco jiného, než vodíkový led")
    Mysterious interstellar visitor was probably a 'dark hydrogen iceberg,' not aliens
    https://phys.org/news/2020-06-mysterious-interstellar-visitor-dark-hydrogen.html
    Kliknutím sem můžete změnit nastavení reklam