• úvod
  • témata
  • události
  • tržiště
  • diskuze
  • nástěnka
    • přihlásit
    registrace
    ztracené heslo?
    VIRGOCosmos In Brief - Aktualní novinky vesmírného výzkumu v kostce
    VIRGO
    VIRGO --- ---
    Bayesian View of Galaxy Evolution | Galaxy Zoo
    https://blog.galaxyzoo.org/2016/09/14/bayesian-view-of-galaxy-evolution/

    By Peter McGill

    The Universe is pretty huge, and to understand it we need to collect vast amounts of data. The Hubble Telescope is just one of many telescopes
    collecting data from the Universe. Hubble alone produces 17.5 GB of raw science data each week. That means since its launch to low earth orbit
    in April 1990, it’s collected roughly a block of data equivalent in size to 6 million mp3 songs! With the launch of NASA’s James Webb Telescope
    just around the corner, the amount of raw data we can collect from the Universe is going to escalate dramatically. In order to decipher what
    this data is telling us about the Universe we need to use sophisticated statistical techniques. In this post I want to talk a bit about
    a particular technique I’ve been using called a Markov-Chain-Monte-Carlo (MCMC) simulation to learn about galaxy evolution.
    VIRGO
    VIRGO --- ---
    +1
    Oujéé! v pinďulí - https://www.youtube.com/watch?v=x9lIPUjFe40

    VIRGO
    VIRGO --- ---
    +1
    The largest Campo del Cielo meteorite is El Chaco at 37 tons!
    Panoramio - Photo of Meteorito El Chaco - Parque Pigüen O´xana - Campo del Cielo - Gancedo, Chaco - Argentina.
    http://www.panoramio.com/photo/102732592

    VIRGO
    VIRGO --- ---
    +1
    Protein-like structures from the primordial soup | ETH Zurich
    https://www.ethz.ch/...s/eth-news/news/2016/09/protein-like-structures-from-the-primordial-soup.html
    Experiments performed by ETH scientists have shown that it is remarkably easy for protein-like, two-dimensional structures – amyloids – to form
    from basic building blocks. This discovery supports the researchers’ hypothesis that primal life could have evolved from amyloids such as these.
    VIRGO
    VIRGO --- ---
    +1
    Přesně za rok!

    Cassini: Mission to Saturn: Cassini's Final Orbits
    https://saturn.jpl.nasa.gov/resources/7365/
    This animation, from Cassini's navigation team, shows the spacecraft's final orbits in 2016 and 2017.

    The green-colored orbits already visible at the beginning of the video represent the F-ring orbits, which Cassini will complete between
    November 2016 and April 2017. During this set of 20 orbits, the spacecraft approaches to just outside the edge of Saturn's main rings.

    The blue-colored orbits represent the Grand Finale orbits, which take place between April and September 2017, leading to Cassini's end-
    of-mission plunge into Saturn's atmosphere on Sept. 15.

    An animated chart at lower right illustrates how the distance of Cassini's point of closest approach to Saturn changes changes several
    times over the course of the Grand Finale. The orange circle represents the orbit of Saturn's moon Titan.

    Cassini's Final Orbits
    https://www.youtube.com/watch?v=Mkj3Gvfp8PA
    VIRGO
    VIRGO --- ---
    Kepler confirms three worlds 40 light-years away are Earth-sized
    https://exoplanets.nasa.gov/...388/kepler-confirms-three-worlds-40-light-years-away-are-earth-sized/
    VIRGO
    VIRGO --- ---
    +1
    The Sixth Mass Extinction Will Be Like Nothing In Earth's History
    http://gizmodo.com/the-sixth-mass-extinction-will-be-like-nothing-in-earth-1786598392
    The sixth mass extinction—the one that seven billion humans are doing their darnedest to trigger at this very moment—is shaping up
    to be like nothing our planet has ever seen. That’s the conclusion of a sweeping new analysis, which compared marine fossil records
    from Earth’s five previous mass extinction events to what’s happening in the oceans right now.
    VIRGO
    VIRGO --- ---
    +1
    Know thy star, know thy planet
    http://phys.org/news/2016-09-thy-star-planet.html

    When it comes to exoplanets, astronomers have realized that they only know the properties of the planets they discover
    as well as they know the properties of the stars being orbited. For a planet's size, precisely characterizing the host
    star can mean the difference in our understanding of whether a distant world is small like Earth or huge like Jupiter.

    VIRGO
    VIRGO --- ---
    +1
    Ancient meteorite impact crater lies under Scotland - BBC News
    http://www.bbc.com/news/uk-scotland-highlands-islands-37360696

    The only meteorite impact crater to be discovered anywhere in Britain
    or Ireland lies beneath a large area of Scotland, a scientist has suggested.

    VIRGO
    VIRGO --- ---
    Discovering the unknown: the world's largest radio telescope
    https://www.youtube.com/watch?v=w_q6kB2nCdw
    VIRGO
    VIRGO --- ---
    +1
    Nice weather at Canberra DSS 43 station tracking Voyager 1 and uplinking a modest 18kw.
    The probe is 18 hrs 52 mins 55 secs of light-travel time from Earth.

    VIRGO
    VIRGO --- ---
    It still remains unclear how Plate Tectonics started on Earth.
    How did plate tectonics start on Earth? | Geology Page
    http://www.geologypage.com/2015/11/how-did-plate-tectonics-start-on-earth.html
    An international research team combining modeling experts from the ETH Zürich, the GFZ German Research Centre for Geosciences,
    and geologists from the University of Texas and Korea University in Seoul have proposed an answer to this question in a recent
    publication in the journal Nature. Based on advanced high-resolution numerical modeling and geological observations they
    demonstrate that a hot mantle plume rising to the lithosphere from the deep mantle might have broken the intact outer shell of
    the early Earth and induced the first large-scale sinking of lithospheric plates, a key process of Plate Tectonics called subduction.

    VIRGO
    VIRGO --- ---
    Gaia scanning the sky
    https://www.youtube.com/watch?v=WY2wpMJbzjI
    VIRGO
    VIRGO --- ---
    Asteroid assault on early planets was more like a gentle massage | New Scientist
    https://www.newscientist.com/...23-asteroid-assault-on-early-planets-was-more-like-a-gentle-massage/
    A proposed period of intense asteroid and comet strikes on the inner solar system might be a fiction. Simulations
    suggest that the purported spike in impacts about 3.9 billion years ago could merely be an artefact of limited samples.

    “It’s been an overly simplistic interpretation of complicated data that leads to this illusion,” says Mark Harrison at
    the University of California, Los Angeles.
    VIRGO
    VIRGO --- ---
    +3
    Pluto ‘Paints’ its Largest Moon Red
    http://www.nasa.gov/feature/pluto-paints-its-largest-moon-red

    VIRGO
    VIRGO --- ---
    Titan's northern lakes, August 3, 2016
    A portrait of Titan using images taken through several infrared filters (left) processed into "pseudocolor" (right) reveals
    its northern lakes region receiving summer sun. Kraken Mare, on the south, has crisper edges; Ligeia Mare, to the upper right,
    has fuzzier edges. To the south of the lakes, near the bottom of the disk, are the Senkyo and Belet sand dune regions.

    VIRGO
    VIRGO --- ---
    New discovery shatters previous beliefs about Earth’s origin -- ScienceDaily
    https://www.sciencedaily.com/releases/2016/09/160914134917.htm
    A new study demonstrates that the Earth and other planetary objects formed in the early years of the Solar System
    share similar chemical origins -- a finding at odds with accepted wisdom held by scientists for decades.

    VIRGO
    VIRGO --- ---
    That's No Comet; That's Pluto! Comet-Like Tail And X-Rays Discovered At Solar System's Edge
    http://www.forbes.com/...o-comet-like-tail-and-x-rays-discovered-at-solar-systems-edge/#4e7202787be5

    VIRGO
    VIRGO --- ---
    The 1.5m wide Gaia Antenna Panel, which contains the satellite's Phased Array Antenna,
    is seen here inside the Antenna Test Facility at EADS CASA test facility in Madrid.
    ESA Science & Technology: Gaia Antenna Support Panel
    http://sci.esa.int/gaia/50533-gaia-antenna-support-panel/

    VIRGO
    VIRGO --- ---
    Astronomers shed light on different galaxy types
    http://phys.org/news/2016-09-astronomers-galaxy.amp

    In research published today, Australian scientists have taken a critical step towards understanding why different types of galaxies exist throughout the Universe.
    The research, made possible by cutting-edge AAO instrumentation, means that astronomers can now classify galaxies according to their physical properties rather
    than human interpretation of a galaxy's appearance. For the past 200 years, telescopes have been capable of observing galaxies beyond our own galaxy, the Milky Way.
    Only a few were visible to begin with but as telescopes became more powerful, more galaxies were discovered, making it crucial for astronomers to come up with a way
    to consistently group different types of galaxies together.

    Kliknutím sem můžete změnit nastavení reklam