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    VIRGOCosmos In Brief - Aktualní novinky vesmírného výzkumu v kostce
    VIRGO
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    +2
    Building a Better Heat Shield for a Mars Mission | Berkeley Lab
    http://newscenter.lbl.gov/2017/02/22/building-heat-shield-mars-mission/

    The new flexible heat-shield system, called ADEPT (Adaptive Deployable Entry and Placement Technology), would be stowed inside
    the spacecraft and deployed like an umbrella prior to atmospheric entry. Supported by an array of sturdy metallic struts,
    the ADEPT system could also serve to steer the spacecraft during descent.

    Adaptable Deployable Entry and Placement Technology (ADEPT)
    https://www.youtube.com/watch?v=f_eWC7OZx2E
    VIRGO
    VIRGO --- ---
    +7
    VIRGO: Eech, páteční chvilka dojetí... :)

    Když jsem ťukal tady v klubu do klávesnice předchozí zprávu o 1987a a mých tehdejších pocitech,
    způsobilo to vnitřně něco víc, než jen letmou vzpomínku. Začal jsem projíždět archiv, ale stejně tak
    i čerstvé zprávy (a že jich teď je)...

    Snažím se vždycky prudit zaneprázdněné osoby a osobnosti co nejméně s velkým respektem k jejich času
    a energii, ale nedalo mi to, a poslal jsem ten animák panu Grygarovi s přáním a poděkováním, protože
    tenkrát to opravdu byla síla. A samozřejmě jsem nečekal odpověď, spouštěčem mé zprávy nebyla snaha o
    kontakt, ale jen udělat mu radost, a popřát zdraví a sílu. Za 10 minut přišla odpověď. Úžasná.. :)

    Vazeny pane ...,

    velmi jste mne potesil svou vzpominkou na supernovu 1987A. Tehdy
    jsem rikal TV stabu v Bratislave, ze musime udelat mimoradnou relaci s
    dvojnasobnou delkou, abychom zduraznili, o jak vyznamnou udalost slo. Moc
    se jim do toho nechtelo, neverili, ze tak dlouho bude co povidat, ale
    nakonec se z toho stala ozdoba celeho TV serialu Okna vesmiru dokoran.
    Tehdy jsem netusil, ze o 2 roky pozdeji skonci u nas komunisticka
    diktatura, a ze v ramci naseho poprevratoveho projektu se dostanu
    mnohokrat na jizni polokouli, kde jsem si pochopitelne hned vyhledal na
    obloze misto, kde supernova vzplanula. Sledovani pozustatku ostatne stale
    pokracuje, je to opravdu vzrusujici pribeh.
    Dekuji za mile prani i darek a take Vam preju hodne radosti z
    astronomickych objevu, ktere jsou doslova na bezicim pasu cim dal tim
    casteji.

    Howgh!! A dík za všechny ryby. :D

    No a čím lepším bych mohl zakončit, než čerstvým lednovým Hubbleovým snímkem SN 1987A (dnes uveřejněným)...
    New image of SN 1987A | ESA/Hubble
    http://www.spacetelescope.org/images/heic1704a/

    VIRGO
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    http://www.eso.org/public/usa/videos/eso1706j/

    https://www.youtube.com/watch?v=WOzPdGS7vRs

    A přidám dvě čerstvá videa od Cool Worlds. Davida Kippinga sleduji teprve tak půl roku, ale jak on
    tak parta nadšených studentů exoplanet kolem něj by mohla vyvážet entuziasmus z poznání napříč sluneční soustavou.. :)

    https://www.youtube.com/watch?v=UMbWUyEwirs

    https://www.youtube.com/watch?v=16mROb2O2rA
    VIRGO
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    1 odpověď
    VIRGO:
    VIRGO: Sheltonova nesmrtelná pracovní historka krásně zpracovaná jako animák.
    Poprvé jsem ji se zatajeným dechem hltal v devadesátkách v podání pana Grygara,
    tohle mi přišlo po třech dekádách neméně poetické... :)

    A star explodes: The story of supernova 1987A | Science News
    https://www.youtube.com/watch?v=67LLoVnwUgw
    VIRGO
    VIRGO --- ---
    Cassini: Mission to Saturn: Hardy Objects in Saturn's F Ring
    https://saturn.jpl.nasa.gov/resources/7606/

    As NASA's Cassini spacecraft continues its weekly ring-grazing orbits, diving just past the outside of Saturn's F ring, it is tracking several small, persistent objects there.

    VIRGO
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    The greatest danger asteroids pose to us is not from the impact | New Scientist
    https://www.newscientist.com/...612-the-greatest-danger-asteroids-pose-to-us-is-not-from-the-impact/

    Wind kills. The most casualties from an asteroid impact won’t come from the impact itself. The wind, pressure and heat
    caused by the crash are far more dangerous, no matter where the asteroid hits.

    Clemens Rumpf at the University of Southampton, UK, and his colleagues have calculated the mortality risk, should an asteroid hit
    a residential area. They considered asteroids that burn up completely, those that hit the ground, and those that strike in water.
    Surprisingly, the airborne side effects were the ones that cost the most lives.

    The greatest danger asteroids pose to us is not from the impact
    https://www.youtube.com/watch?v=_CKiPyQc21I
    VIRGO
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    +2
    https://www.nasa.gov/...ddard/2017/nasas-webb-telescope-team-prepares-for-earsplitting-acoustic-test

    Inside NASA's Goddard Space Flight Center in Greenbelt, Maryland the James Webb Space Telescope team completed the environmental portion
    of vibration testing and prepared for the acoustic test on the telescope. Engineers and technicians pushed the telescope (wrapped in a clean tent)
    through a large set of insulated steel doors nearly a foot thick into the Acoustic Test Chamber, where the telescope will be exposed to the ear-
    splitting noise (and resulting vibration) of launch. These photos show the telescope inside (top) and outside (bottom) the acoustics chamber.



    VIRGO
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    1 odpověď+1
    Chandra :: Photo Album :: Supernova 1987A :: February 24, 2017
    http://chandra.harvard.edu/photo/2017/sn1987a/

    To commemorate the 30th anniversary of Supernova 1987A (SN 1987A), a new package of material consisting of images,
    time-lapse movies, an animation, and a printable three-dimensional model have been released. The remains of SN 1987A
    are entering a new era, as explained in our press release.

    HADIAK
    HADIAK --- ---
    VIRGO: ten satelit ju pozdravil pred zapadom? :)
    VIRGO
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    Hubble Space Telescope
    https://www.youtube.com/watch?v=_59jN2B5MYc
    VIRGO
    VIRGO --- ---
    1 odpověď
    Venus Falling
    https://www.youtube.com/watch?v=OHeq221Y-mc
    VIRGO
    VIRGO --- ---
    1 odpověď
    The Dawn of a New Era for Supernova 1987a
    https://www.nasa.gov/feature/goddard/2017/the-dawn-of-a-new-era-for-supernova-1987a
    Three decades ago, astronomers spotted one of the brightest exploding stars in more than 400 years. The titanic supernova, called
    Supernova 1987A (SN 1987A), blazed with the power of 100 million suns for several months following its discovery on Feb. 23, 1987.

    Since that first sighting, SN 1987A has continued to fascinate astronomers with its spectacular light show. Located in the nearby
    Large Magellanic Cloud, it is the nearest supernova explosion observed in hundreds of years and the best opportunity yet for
    astronomers to study the phases before, during, and after the death of a star.

    VIRGO
    VIRGO --- ---
    HOWKING: Uá! :o
    HOWKING
    HOWKING --- ---
    1 odpověď+7

    Asi nejlepší snímek komplexu mlhovin v Orionu, jaký jsem viděl. Ukrutný dynamický rozsah zobrazuje jak jasné, tak úplně ty nejslabší mlhoviny co tak jsou. Masakr!
    VIRGO
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    What will the James Webb Space Telescope reveal about the newly discovered exoplanets?
    http://newatlas.com/james-webb-telescope-trappist-exoplanets/48075/

    Scanning this light for atmospheric molecules could reveal all kinds of secrets about
    the planets in the TRAPPIST-1 system, including possibly the building blocks of life.

    VIRGO
    VIRGO --- ---
    Does Pluto Have The Ingredients For Life?
    http://www.astrobio.net/news-exclusive/pluto-ingredients-life/
    With the possible production of hydrocarbons and nitriles (another organic molecule)
    on Pluto, even more interesting pre- chemistry for life could take place.
    VIRGO
    VIRGO --- ---
    https://www.nasa.gov/image-feature/jpl/pia21463/layers-and-dark-dunes

    Much of Mars' surface is covered by fine-grained materials that hide the bedrock, but elsewhere,
    such as in this scene, the bedrock is well exposed (except where covered by sand dunes).

    he map is projected here at a scale of 25 centimeters per pixel. [The original image scale is 26.7
    centimeters per pixel (with 1 x 1 binning); objects on the order of 80 centimeter across are resolved.] North is up.

    XCHAOS
    XCHAOS --- ---
    NASA Scientists Propose New Definition of Planets, and Pluto Could Soon Be Back - Slashdot
    https://science.slashdot.org/...tists-propose-new-definition-of-planets-and-pluto-could-soon-be-back
    VIRGO
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    The upstart asteroid who showed rings are for everybody | New Scientist
    https://www.newscientist.com/...cle/2121755-the-upstart-asteroid-who-showed-rings-are-for-everybody/

    Adam Synergy: A new paper on Chariklo's Rings appeared on the astro ph arXiv just yesterday:

    [1702.06356] Simulating the Smallest Ring World of Chariklo
    https://arxiv.org/abs/1702.06356

    Their N-body simulations suggest that rings might typically occur on timescales of only
    about 100 years, which is considerably shorter than the timescales suggested in previous studies.

    VIRGO
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    +2
    Comparing the scale of the TRAPPIST1 system to Jupiter and its biggest moons.

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