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    VIRGOCosmos In Brief - Aktualní novinky vesmírného výzkumu v kostce




    For every complex question, there's a simple answer that's completely wrong.
    rozbalit záhlaví
    VIRGO
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    TOXYGEN: Včerejší 10h srážení iontů olova na LHC (detektor ALICE provádí srážky
    většinou poslední týden v měsíci), a úhrnná vzdálenost, kterou částice urazily.
    TOXYGEN
    TOXYGEN --- ---
    1 odpověď
    VIRGO: co to je?
    VIRGO
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    Zajímavý vývoj kardinální otázky...
    Cassini hints at young age for Saturn's rings - BBC News
    http://www.bbc.com/news/science-environment-41091333

    The spectacular rings of Saturn may be relatively young, perhaps just 100 million years or so old.
    This is the early interpretation of data gathered by the Cassini spacecraft on its final orbits of the giant world.
    If confirmed, it means we are looking at Saturn at a very special time in the age of the Solar System.
    Cassini is scheduled to make only two more close-in passes before driving itself to destruction in Saturn's atmosphere on 15 September.

    VIRGO
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    +1
    What Spacecraft Saw During the 2017 Solar Eclipse
    https://www.youtube.com/watch?v=7RmczjiDlwE
    VIRGO
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    The end-Cretaceous mass extinction was rather unpleasant | Ars Technica
    https://arstechnica.com/science/2017/08/the-end-cretaceous-mass-extinction-was-rather-unpleasant/

    Climate simulation shows how long soot blotted out the Sun.

    There are a few hellish episodes in Earth’s unfathomably long history that make even Hollywood’s most bombastic disaster movie
    look like a sunny picnic. The end-Cretaceous extinction is the most well-known, since it wiped out the dinosaurs (minus the birds,
    of course) and opened the door for the mammalian revolution—which most human beings regard as generally a good thing.

    Though the story is probably familiar, there are still significant questions about exactly what happened during that cataclysm.
    Many species were seemingly in trouble before that colossal meteoroid crashed into the coastal Yucatan, perhaps partly because of
    a long-lived series of massive volcanic eruptions in what is now India. This has led some to question whether the impact was as
    deadly as it's made out to be. But we've also filled in some details of just how the meteoroid impact would mess up the Earth,
    and these include mind-blowing tsunamis, rampant wildfires, and see-sawing climate effects. So how lethal was the impact?

    VIRGO
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    +1
    VIRGO: NASA’s Johnson Space Center Closes Through Labor Day for Tropical Storm Harvey
    https://www.nasa.gov/...sa-s-johnson-space-center-closes-through-labor-day-for-tropical-storm-harvey

    VIRGO
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    Kepler Stares at Neptune
    https://www.youtube.com/watch?v=jUvcaYFEWac
    VIRGO
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    Life 3.0: Being Human in the Age of Artificial Intelligence
    https://www.youtube.com/watch?v=vnyBrm7E2nE


    Max Tegmark and his wife Meia discuss his new book "Life 3.0: Being Human in the Age of Artificial Intelligence".

    The Universes of Max Tegmark
    http://space.mit.edu/home/tegmark/ai.html
    VIRGO
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    +1
    Bad Astronomy | Astronomers discover a new type of star: BLAPs
    http://www.syfy.com/syfywire/astronomers-discover-a-new-type-of-star-blaps

    t’s not every day (or night, I suppose) that astronomers discover a new kind of star. In this case, it’s not so much that the stars are totally different from other stars,
    and if you saw one you’d know right away something was amiss. Instead, these stars behave differently, in a way never seen before. And because of that, it took a special
    kind of survey to even find them at all.

    The stars are called Blue Large-Amplitude Pulsators, or BLAPs, an acronym that is both ridiculous and makes me very happy. They’re called this because a) they’re blue,
    and 2) they pulsate, changing in brightness by the relatively large amount of 20 – 45%. That’s a lot. If the Sun did this we’d be alternately cooked and frozen.

    Not only that, but these stars brighten and dim really quickly: They can go from one extreme to the other and back again in just over 20 minutes. Of the dozen or so found,
    the shortest one pulses with a period of 23 minutes, and the longest 39. That’s incredibly fast. These are stars: Vast spinning balls of gas that tip the cosmic scales at
    an octillion tons or ten. Changing something that size that rapidly and by that much is fearsome.

    VIRGO
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    Volunteers find ‘spiders’ on Mars - but not where they expected | University of Oxford
    http://www.ox.ac.uk/...-08-29-volunteers-find-%E2%80%98spiders%E2%80%99-mars-not-where-they-expected

    Armchair astronomers have helped Oxford University scientists discover landforms known as ‘spiders’ on parts of Mars where they were previously thought not to exist.

    VIRGO
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    1 odpověď
    10h šichta. Až někam za Kuiperův pás...

    VIRGO
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    +6
    Jen takový lehký flastřík, ale radost velká! Dnešní potvrzení rezervace letenky jarní výpravy na La Palma! :))

    La Palma - Visits - Observatory - Astronomy - Tours - Astrotourism | astrolapalma.com
    http://www.astrolapalma.com/en/content/visits-observatorio-roque-de-los-muchachos



    VIRGO
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    1 odpověď+3
    James Webb Space Telescope Surrounded by Rising Floodwaters - Scientific American
    https://www.scientificamerican.com/...e/james-webb-space-telescope-surrounded-by-rising-floodwaters/

    Isolated in a giant thermal vacuum chamber, NASA’s $8.6 billion next-generation observatory is riding out the worst of Hurricane Harvey

    As of this writing, there have been no reports of flooding at Building 32 or other critical JSC facilities, and the center possesses several
    electric generators as backup in the event of a power outage. JSC lies 13 feet above sea level at its lowest point, and 22 feet at its highest—
    making it a relatively lofty point in the surrounding landscape, much of which is already submerged beneath rising floodwaters.
    VIRGO
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    https://www.nasa.gov/feature/jpl/saturn-plunge-nears-for-cassini-spacecraft

    The spacecraft is expected to lose radio contact with Earth within about one to two minutes after beginning its descent into Saturn's upper atmosphere.
    But on the way down, before contact is lost, eight of Cassini's 12 science instruments will be operating. In particular, the spacecraft‘s ion and neutral
    mass spectrometer (INMS), which will be directly sampling the atmosphere's composition, potentially returning insights into the giant planet's formation
    and evolution. On the day before the plunge, other Cassini instruments will make detailed, high-resolution observations of Saturn's auroras, temperature,
    and the vortices at the planet's poles. Cassini's imaging camera will be off during this final descent, having taken a last look at the Saturn system
    the previous day (Sept. 14).

    Cassini: A Saturn Odyssey
    https://www.youtube.com/watch?v=fHaaIX-iSqM
    VIRGO
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    První JPL telkon začíná s mírným zpožděním (technické potíže):

    NASA JPL Live
    https://www.youtube.com/watch?v=X4fwyphQqhI


    VIRGO
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    https://www.nasa.gov/...nasa-team-passes-major-technological-milestone-for-characterizing-exoplanets

    NASA researchers say they have passed a major milestone in their quest to mature more powerful tools for directly detecting and analyzing the atmospheres
    of giant planets outside the solar system — one of the observational goals of NASA’s proposed Wide-Field Infrared Space Telescope, also known as WFIRST.

    In tests conducted at the High-Contrast Imaging Testbed at NASA’s Jet Propulsion Laboratory, or JPL, in Pasadena, California — one of the world’s most
    advanced testbeds of its kind — researchers created what they call a region of very deep contrast between a simulated star and its planet. They also
    demonstrated the ability to detect and analyze the planet’s faint light over a relatively large portion of the visible to near-infrared wavelength band.

    An instrument developed by scientists at NASA’s Goddard Space Flight Center in Greenbelt, Maryland — the Prototype Imaging Spectrograph for Coronagraphic
    Exoplanet Studies, or PISCES — played an important role in the demonstration, showing that it could separate light of one or more Jupiter-sized exoplanets
    by their wavelength (color) and record the data at every position around a star.

    VIRGO
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    10 Most Bizarre Planets You've Probably Never Heard Of - Listverse
    http://listverse.com/2017/08/28/10-most-bizarre-planets-youve-probably-never-heard-of/

    VIRGO
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    U of T astrophysicists convert moons and rings of Saturn into music - Arts & Science News
    http://news.artsci.utoronto.ca/all-news/saturn-sounds/

    After centuries of looking with awe and wonder at the beauty of Saturn and its rings,
    we can now listen to them, thanks to the efforts of astrophysicists at the University of Toronto.

    “To celebrate the Grand Finale of NASA’s Cassini mission next month, we converted Saturn’s moons
    and rings into two pieces of music,” says astrophysicist Matt Russo, a postdoctoral researcher at
    the Canadian Institute for Theoretical Astrophysics in the Faculty of Arts & Science at U of T.

    SATURN Sounds Part 1: Moons And Rings Translated Into Music
    https://www.youtube.com/watch?v=UGnuDE7sINI


    VIRGO
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    VIRGO: Likely transiting exocomets detected by Kepler
    What’s that coming over the disk? | astrobites
    https://astrobites.org/2017/08/24/whats-that-coming-over-the-disk/

    During visual inspection, the light curve of KIC 3542116, a F2-type star, was found to have three asymmetric,
    transit-like features with easy-to-spot depths of 0.1% over a period of 1 day. Further inspection revealed
    three dips of a similar shape hidden within the Kepler data that was hidden by stellar variability.
    The resulting data is shown below in figures 3 and 4.

    VIRGO
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    PLATO as it is: A legacy mission for Galactic archaeology - Miglio - 2017 - Astronomische Nachrichten - Wiley Online Library
    http://onlinelibrary.wiley.com/doi/10.1002/asna.201713385/full

    VIRGO
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    New Computational Model of Chemical Building Blocks May Help Explain the Origins of Life
    http://www.stonybrook.edu/...model-of-chemical-building-blocks-may-help-explain-the-origins-of-life/

    Scientists have yet to understand and explain how life’s informational molecules – proteins and DNA and RNA – arose from simpler chemicals
    when life on earth emerged some four billion years ago. Now a research team from the Stony Brook University Laufer Center for Physical and
    Quantitative Biology and the Lawrence Berkeley National Laboratory believe they have the answer. They developed a computational model
    explaining how certain molecules fold and bind together to grow longer and more complex, leading from simple chemicals to primitive biological
    molecules. The findings are reported early online in PNAS.
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