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    DRAGONFotografie z vesmíru a kosmonautiky +videa
    DRAGON
    DRAGON --- ---
    zajimavy objev :)

    Exoplanet LHS 1140 b:

    Telescopes used:
    MEarth-North observatory, Hubble, JWST, TESS, Spitzer etc.

    Host star: LHS 1140 (Red Dwarf)
    Distance: 48 light-years
    Stellar activity: Calm [No harmful flares]

    Planet position: Habitable zone
    Tidal-locking: Yes [one side always star-facing]
    Type: Super-Earth [very recently confirmed by JWST]
    Mass: 5.6 times mass of Earth
    Radius: 70% larger than Earth
    Mean density: 5.9±0.3 g/cm3 [Earth= 5.51 g/cm3]
    Planetary geology: rocky, ice-rich [Snowball]

    Planetary atmosphere: Exists! [JWST data]
    [only habitable zone exoplanet known till date to have one]

    Atmospheric composition: Nitrogen-rich (tentative result)

    Surface H2O: High probability (density suggests 10%-20% of planet mass is H2O)
    Temperature in star-facing side: 20 deg Celsius/68 deg Fahrenheit
    Surface liquid water: High probability in star-facing side

    If true, the habitable-zone planet has--

    1) a substantial atmosphere [a secondary atmosphere formed due to volcanic activity and comet impacts similar to Earth] and

    2) a substantial hydrosphere [an ocean of 4000 km diameter]

    Caution: More observations must be done, especially with JWST, for concrete verification

    Future observation opportunity:

    1) A large-scale (500 hours of Director’s Discretionary Time) survey of rocky exoplanets around nearby M-dwarf stars in JWST observation cycle 3 [to start mid next year]
    2) ~250 orbits of ultraviolet observations with the Hubble Space Telescope to characterize the activity of the host stars in parallel to JWST survey

    Image: representative
    [direct imaging of this planet is not possible with today's technology]

    PUBLICURINATION
    PUBLICURINATION --- ---
    BLACKHEAD: detektor mikrogravitace ;)
    BLACKHEAD
    BLACKHEAD --- ---
    ELECTRICKOTA: Wow! Kolem 6:25 nadherna razova vlna... 8-P
    BLACKHEAD
    BLACKHEAD --- ---
    PUBLICURINATION: Ukazatel gravitace.... ;-)
    PUBLICURINATION
    PUBLICURINATION --- ---
    DRAGON: bavej ty kostky za oknem :)
    ELECTRICKOTA
    ELECTRICKOTA --- ---
    Starship Flight 4 // 4k Slow Mo & Clean Audio
    https://www.youtube.com/watch?v=wZligwZMODU
    DRAGON
    DRAGON --- ---
    Sierra Space's Dream Chaser spaceplane

    DRAGON
    DRAGON --- ---
    Our precious Earth and the lunar far side – Dwingeloo Radio Telescope | CAMRAS
    https://www.camras.nl/en/blog/2018/precious-earth-and-lunar-far-side/

    The Chinese satellite "Longjiang-2" took a picture that shows the far side of the Moon, and behind it our beautiful planet, carrying life in the immense cosmic void 🌎

    QWWERTY
    QWWERTY --- ---
    How NASA fixed a problem on Voyager 1 from 15 billion miles away
    https://eu.usatoday.com/story/graphics/2024/04/24/how-nasa-solved-voyager-1-computer-problem/73424132007/
    Engineers from NASA and the Jet Propulsion Laboratory discovered a single computer chip inside the spacecraft’s Flight Data Subsystem – which collects science and engineering information and transmits it to Earth – had malfunctioned.

    The chip could not be repaired. Instead, engineers moved software code from the chip into a different part of the subsystem's memory system.


    (a jenom ilustracne)
    TANTRAMAN
    TANTRAMAN --- ---
    Nevím kam to dát
    Íránská balisticka raketa vytazena z rudého moře

    DRAGON
    DRAGON --- ---
    BRAMBOROVY_KRAL: ruzna ohniska, takze pri vyssi vzdalenosti se prepne a porad bude pekne videt? tipuju :)
    BRAMBOROVY_KRAL
    BRAMBOROVY_KRAL --- ---
    CHAOS_RK: proč to má 2 teleskopy? Umí to 3d? :)
    ELECTRICKOTA
    ELECTRICKOTA --- ---
    CHAOS_RK: yeap - btw původně výmysl NASA pro pozorování testovacích letů Apollo, původně to byl lafetový kulomet ;)
    CHAOS_RK
    CHAOS_RK --- ---
    ELECTRICKOTA: toceno na:
    ELECTRICKOTA
    ELECTRICKOTA --- ---
    Inženýrské videa, tento startu IFT-2.
    4k - Never seen before: Full Skyshow video of the SpaceX IFT-2 launch
    https://youtu.be/IvHY6imbUBo?si=BeBh7eGBoSlcrjuX&t=157

    Artemis
    Stunning 4K SKYSHOW Artemis 1 Video
    https://www.youtube.com/watch?v=69vIR9zqnOU

    A další videa budou přidávat na svůj kanál https://www.youtube.com/@skyshowtv takže odběr je nutnost ;)
    Je to firma co nabízí své služby pro trackování startů raket firmám jako NASA, SpaceX, Virgin Galactic a dalších, takže kontent bude zajímavý.
    QWWERTY
    QWWERTY --- ---
    Cas A - Chandra/Webb/Hubble/Spitzer composite | For the firs… | Flickr
    https://www.flickr.com/photos/nasawebbtelescope/53453268481/in/album-72177720313923911/

    DESTROYER
    DESTROYER --- ---
    Starship Flight 3 Aftermath | SpaceX Boca Chica
    https://www.youtube.com/watch?v=cLNitilyOII


    Ta uvodni slow-mo sekvence!
    TOXICMAN
    TOXICMAN --- ---
    MEI: jak říká Araon, bude to Google Earth
    nepodařilo se mi replikovat přesně, ale podobně

    Lon -150.66345
    Lat -10.51189
    Alt 35000km

    ARAON
    ARAON --- ---
    MEI: To vypada proste jako snapshot z Google Earth, nebo nejake podobne aplikace.
    TANTRAMAN
    TANTRAMAN --- ---
    MEI: Ulož si obrázek na disk, otevři prohlížeč, otevři googlecom a pretahni obrázek na danou stránku. Najdi si ten s největším rozlišením případně ten co je na NASA.gov
    Kliknutím sem můžete změnit nastavení reklam