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    VIRGOCosmos In Brief - Aktualní novinky vesmírného výzkumu v kostce
    VIRGO
    VIRGO --- ---
    How the magnetic fields of galaxies may have been formed
    http://3tags.org/article/how-the-magnetic-fields-of-galaxies-may-have-been-formed
    Scientists are using powerful lasers to mimic the effects of supernovae, which are helping to reveal how the magnetic fields of galaxies may have been formed in the
    early universe. All galaxies have magnetic fields, ones that might affect how fast stars are born, but it hasn’t been discovered where these magnetic fields come from.

    The standard model explains that these fields form from tiny magnetic fields, which existed before galaxies appeared, serving as cosmic seeds that were amplified over
    billions of years by the turbulence in the intergalactic medium. It’s still unclear how these seeding magnetic fields initially arose.
    VIRGO
    VIRGO --- ---
    Změna!

    ESO: Dear friends we will be making an announcement today at 19:00 CEST. Please stay tuned until then
    VIRGO
    VIRGO --- ---
    Událo se v Praze přesně před 10 lety. Emoce vládnou do dnešních dnů... :)
    IAU 2006 General Assembly: Result of the IAU Resolution votes | Press Releases | IAU
    https://www.iau.org/news/pressreleases/detail/iau0603/

    XCHAOS
    XCHAOS --- ---
    VIRGO: mno, na Europě (a možná i na Ganymedu - o tom se mluví méně, ale oceán tam může být taky) by mohl být život víceméně pozemského typu (toho hlubokomořského, ne fotosyntetizující). Na Enceladu by to asi byla výrazně větší exotika a na Titan už se předpokládá biochemie zcela nepodobná té na Zemi (a museli bychom pak zásadně přehodnotit naše představy o obyvatelnách zónach u exoplanet i "exoměsíců")
    VIRGO
    VIRGO --- ---
    Ring Racer (Take Two) | Lights in the Dark
    https://lightsinthedark.com/2011/04/16/ring-racer-take-two/

    VIRGO
    VIRGO --- ---
    This 360 Degree Video of the Milky Way Mapped With Constellations is Breathtaking - The Evolving Planet
    http://www.theevolvingplanet.com/360-degree-constellation-map-breathtaking/

    360 Galaxy Milky Way / Constellation map
    https://www.youtube.com/watch?v=Idi3pXnQIBI
    VIRGO
    VIRGO --- ---
    Earthquake leaves at least 37 dead in central Italy - BBC News
    http://www.bbc.com/news/world-europe-37171953

    Italy earthquake: 'At least 38 dead including two children' as 'apocalyptic' 6.2 magnitude leaves towns in ruins
    http://www.telegraph.co.uk/...8/24/italy-earthquake-at-least-20-dead-as-apocalyptic-62-magnitude-le/

    Central Italy earthquake: at least 38 dead in 6.2 quake – live | World news | The Guardian
    https://www.theguardian.com/...-terremoto-earthquake-buildings-collapse-amatrice-rome-people-trapped



    VIRGO
    VIRGO --- ---
    Just how dangerous is it to travel at 20% the speed of light?
    Breakthrough Starshot has examined the impact of stray atoms, cosmic dust.
    Just how dangerous is it to travel at 20% the speed of light? | Ars Technica
    http://arstechnica.com/science/2016/08/could-breakthrough-starshots-ships-survive-the-trip/

    The space between here and the nearest star isn't completely empty. Earlier generations of stars have left a sparse collection of tiny dust particles,
    and various processes have left individual atoms scattered through the interstellar space. These particles pose very distinct risks, and the team worked
    through each separately.

    The main problem with running into an atom isn't the physical collision but rather the energy deposited in the spacecraft by the impact, which can cause
    local heating that damages the craft in two ways. When high enough, the heating causes the material the craft is made of to evaporate into space. Below
    that threshold, it can cause local melting, leading to a change in material properties as the area resolidifies.
    VIRGO
    VIRGO --- ---
    Another awesome Kevin M. Gill render: Daphnis pulling along waves in the Keeler Gap. Rendered with Autodesk Maya and Adobe Photoshop.



    Vertical Structures Tower over Saturn's B-Ring

    VIRGO
    VIRGO --- ---
    Globular clusters and halo assembly
    ATNF Daily Astronomy Picture
    http://www.atnf.csiro.au/ATNF-DailyImage/
    Hierarchical accretion models for galaxy formation predict that the majority of stars in the halo of a spiral galaxy
    should have formed within dwarf galaxies that were later accreted by the larger galaxy. In 2010, we used a rough chemical
    tagging approach to identify stars in the Milky Way halo that had likely formed in globular clusters, using the light-element
    abundance anomalies that are well-studied in Galactic globular clusters.

    VIRGO
    VIRGO --- ---
    Fossilized rivers suggest warm, wet ancient Mars
    http://phys.org/news/2016-08-fossilized-rivers-ancient-mars.html
    Extensive systems of fossilised riverbeds have been discovered on an ancient region of the Martian surface, supporting the idea
    that the now cold and dry Red Planet had a warm and wet climate about 4 billion years ago, according to UCL-led research.
    The study, published in Geology and funded by the Science & Technology Facilities Council and the UK Space Agency, identified over
    17,000km of former river channels on a northern plain called Arabia Terra, providing further evidence of water once flowing on Mars.

    VIRGO
    VIRGO --- ---
    XCHAOS: Nejen magnetosféra, ale i slapová působení mateřské planety.
    Rovněž vzdálenost celého systému od mat. hvězdy musíme brát v potaz.
    Mně místo Star Wars odkojila maková panenka, ale v tomto ohledu jsou obě ságy stejně relevantní. :)

    On už výraz "obyvatelnost" je všeobsažný. Jaké formy by to měly obývat? Primitivní organismy?
    Křemíková inteligence? Jak pak definujeme, co je živé? Zatím se nám to všechno točí vesměs
    kolem biologie. V obou zmíněných případech by hypoteticky ten Titan mohl klapnout. Ale biodiverzita
    v pozemském smyslu? To zcela určitě ne. Je to těžké - ale nesmírně zajímavé.

    Už to tu padlo víckrát: Potřebujeme víc přesnějších dat sledování co nejvíce exosystémů,
    což se nám snad v příštích 15 letech podaří
    VIRGO
    VIRGO --- ---
    The near-Earth asteroid population from two decades of observations
    By Pasquale Tricarico
    http://arxiv.org/pdf/1604.06328.pdf

    NEBULA
    NEBULA --- ---
    VIRGO: jj naprosto zásadní film :) přepínala jsem z avatara :)
    VIRGO: no přibližně takovej jsem letos zahlédla, ale ne tak barevnej, ale mega dlouhej :)
    XCHAOS
    XCHAOS --- ---
    k předchozímu - tak jako prý jo...
    Habitability of natural satellites - Wikipedia, the free encyclopedia
    https://en.wikipedia.org/wiki/Habitability_of_natural_satellites#Extrasolar
    Exomoons Could Be Abundant Sources Of Habitability - Astrobiology Magazine
    http://www.astrobio.net/news-exclusive/exomoons-abundant-sources-habitability/

    kritický faktor je asi magnetosféra planety, kolem které takový měsíc obíhá
    XCHAOS
    XCHAOS --- ---
    VIRGO: taky často přemýšlím, při všech těch zprávách o objevech exoplanet, že třeba kolem složením a gravitací neobyvatelných planet v obyvatelné zóně by přece mohly obíhat obyvatelné měsíce :-) (a dokonce by se třeba mohlo ukázat, že nejtypičtějším osídleným tělesem jsou měsíce, a ne planety...). (dobře, tohle je asi trochu ovlivněné Star Wars a měsícem Endor :-)

    Je pravda, že v naší soustavě Titan coby měsíc, který si drží atmosféru, je spíš vyjímka, ale co vlastně brání tomu, aby planeta velikosti Jupitera měla měsíc velikosti např. Země?
    VIRGO
    VIRGO --- ---
    A bright supernova candidate ASASSN-16fj, just announced by ASAS-SN
    ATel #9398: ASASSN-16jf: Discovery of A Probable Supernova in UGCA 430
    http://www.astronomerstelegram.org/?read=9398

    VIRGO
    VIRGO --- ---
    Astronomers discover a large cavity around the Tycho's supernova
    http://phys.org/news/2016-08-astronomers-large-cavity-tycho-supernova.html
    Chinese astronomers have detected a large cavity existing around Tycho's supernova, also know as SN 1572,
    exhibiting stream-like structures. The findings, reported in a paper published Aug. 18 on arXiv.org,
    show that the environments of the supernovae may be much more complicated than previously thought.

    VIRGO
    VIRGO --- ---
    China unveils its Mars 2020 probe and science goals
    China unveils its Mars 2020 probe and science goals | gbtimes.com
    http://gbtimes.com/china/china-unveils-its-mars-2020-probe-and-science-goals
    The lander will carry a gasbag, a parachute and reverse thrust engines in order to achieve a safe landing,
    while factors such as the long-distance data transmission delay means that the rover will have a high autonomy.

    The science goals include studying the Martian topography, soil, environment, atmosphere and water ice, as well
    as the planet's internal structure and search for possible signs of life.



    VIRGO
    VIRGO --- ---
    VIRGO: If we built highways on Comet 67P :) Montage in scale by Karl Battams.

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