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    VIRGOCosmos In Brief - Aktualní novinky vesmírného výzkumu v kostce
    VIRGO
    VIRGO --- ---
    Chybějící telemetrie, ale zřejmě problémy s příjmem na pozemní stanici...
    VIRGO
    VIRGO --- ---
    1. Iridium úspěšně odděleno!
    VIRGO
    VIRGO --- ---
    How the darkness and the cold killed the dinosaurs | EurekAlert! Science News
    https://www.eurekalert.org/pub_releases/2017-01/pifc-htd011317.php

    66 million years ago, the sudden extinction of the dinosaurs started the ascent of the mammals, ultimately resulting in humankind's reign on Earth.
    Climate scientists now reconstructed how tiny droplets of sulfuric acid formed high up in the air after the well-known impact of a large asteroid
    and blocking the sunlight for several years, had a profound influence on life on Earth. Plants died, and death spread through the food web. Previous
    theories focused on the shorter-lived dust ejected by the impact. The new computer simulations show that the droplets resulted in long-lasting cooling,
    a likely contributor to the death of land-living dinosaurs. An additional kill mechanism might have been a vigorous mixing of the oceans, caused by
    the surface cooling, severely disturbing marine ecosystems.

    "The big chill following the impact of the asteroid that formed the Chicxulub crater in Mexico is a turning point in Earth history," says Julia Brugger
    from the Potsdam Institute for Climate Impact Research (PIK), lead author of the study to be published today in the Geophysical Research Letters. "We
    can now contribute new insights for understanding the much debated ultimate cause for the demise of the dinosaurs at the end of the Cretaceous era."
    To investigate the phenomenon, the scientists for the first time used a specific kind of computer simulation normally applied in different contexts,
    a climate model coupling atmosphere, ocean and sea ice. They build on research showing that sulfur- bearing gases that evaporated from the violent
    asteroid impact on our planet's surface were the main factor for blocking the sunlight and cooling down Earth.

    VIRGO
    VIRGO --- ---


    VIRGO
    VIRGO --- ---
    Krása.



    DARKMOOR
    DARKMOOR --- ---
    VIRGO: To celkem jde
    VIRGO
    VIRGO --- ---
    Joooo! Maj tam krásný počasí...
    VIRGO
    VIRGO --- ---
    DARKMOOR: 1ks za +/- 20 doláčů + 12 ship-handl (objednal jsem rovnou dva).
    VIRGO
    VIRGO --- ---
    DARKMOOR
    DARKMOOR --- ---
    VIRGO: Co je malé, to je milé ;)
    Na kolik tě přišel?
    VIRGO
    VIRGO --- ---
    Konečně mi přišel globus Pluta, a den na to zjistím, že je ještě větší model... Grrrrr! :))

    VIRGO
    VIRGO --- ---
    Is Time an Illusion? | Prof Sean Carroll
    https://www.youtube.com/watch?v=mAm7wAbeEsc
    VIRGO
    VIRGO --- ---
    Are there volcanoes on comets? | Astronomy.com
    http://www.astronomy.com/news/2017/01/comet-volcanoes
    Explosive research says there may be cryovolcanism on cometary bodies.

    Volcanoes may not just exist on moons and planets. A comet orbiting between Mars and Jupiter seems to have its own signs of icy volcanism,
    spewing frozen material instead of hot lava. Rather than a single stagnant mound, however, the eruptions come from a single location multiple
    times before eventually traveling to another point in the icy crust.

    The slow rotation of the comet allows the crust to weaken over the course of its day, while carbon monoxide piles up on the surface again
    during the night. Eventually, the pressure building beneath the surface erupts. Unlike the jets spotted on other comets, the cold ‘lava’
    bursts through suddenly and explosively, with no signs of gradual buildup.

    “It’s an abrupt event,” says Richard Miles a cometary scientist with the British Astronomical Association who presented the results at
    the Division for Planetary Sciences meeting in Pasadena, California. Once the explosion is complete, it shuts down without the slow
    decline common to jets. “It’s done, and everything tapers out. It’s what you would expect from cryovolcanism.”

    VIRGO
    VIRGO --- ---
    Astronomers Ask for Diversity in Deciding Next-Decade Priorities
    http://www.space.com/35302-astronomers-ask-for-diversity-decadal-survey.html

    Official discussions have begun about which major astronomy missions should receive funding in the 2020s, but the makeup of the
    groups leading those discussions has fueled concerns in the astronomy community about a lack of race, gender and age diversity.

    At the 229th meeting of the American Astronomical Society (AAS), a town-hall-style session that allowed attendees to pose questions
    to the leaders of a committee that will make recommendations for the next decadal survey, a report that will deeply influence
    the path that U.S. astronomy will take in the 2020s.

    VIRGO
    VIRGO --- ---
    A New Look at ‘Exocomets’
    http://www.centauri-dreams.org/?p=36939
    VIRGO
    VIRGO --- ---
    Observations hint at a new recipe for giant black holes | Science | AAAS
    http://www.sciencemag.org/news/2017/01/observations-hint-new-recipe-giant-black-holes

    Here's a thought experiment that has unsettled astrophysicists: Start the clock at the beginning of time. Form a black hole in the usual way,
    through the collapse of a massive star. To make it grow, force-feed it with gas, which will resist being devoured by heating up and dispersing
    as it nears the black hole's maw. Try to grow a black hole fast enough to explain the ones that existed in the real universe when it was just
    a billion years old: monsters a billion times the mass of the sun that drive the powerful beacons called quasars.

    "It's very difficult," says Amy Reines, an observational astronomer at the National Optical Astronomy Observatory in Tucson, Arizona. Astronomer
    Nico Cappelluti of Yale University is more definitive. "There is no way to grow such a massive black hole from an ordinary stellar black hole,"
    he says. But he and others see hints of a faster route involving primordial gas clouds, as they described last week at the winter meeting of
    the American Astronomical Society in Grapevine, Texas.

    VIRGO
    VIRGO --- ---
    Tak snad dnes před sedmou:
    SpaceX Set for High Stakes Falcon 9 Blastoff Resumption with Iridium Satellite Fleet on Jan. 14 - Watch Live - Universe Today
    http://www.universetoday.com/...astoff-resumption-with-iridium-satellite-fleet-on-jan-14-watch-live/
    DARKMOOR
    DARKMOOR --- ---
    JULIANNE: Krása, o tom jsem nevěděl. Než dořeší technologie kolem, tak by se měly zlepšit i solární panely a něco málo vyždímat i z malé plochy. A možná by tam mohla fungovat i miniaturní větrná turbína... Ale to už by asi bylo krapet nemotorné a těžké vozítko. Bude to chtít holt vyzkoušet na několika misích :P
    JAYME
    JAYME --- ---
    zaklad je zjistit, cim Mars prisel o atmosferu a pak to aplikovat na Venusi a trochu ji upustit, a zaroven prijit na to, cim se Venuse tak zaparila a pak to aplikovat na Mars. a mame tri obyvatelne zemekoule, hotovo, fakturu poslu.
    Kliknutím sem můžete změnit nastavení reklam