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    VIRGOCosmos In Brief - Aktualní novinky vesmírného výzkumu v kostce
    VIRGO
    VIRGO --- ---
    Geomagnetic storms reaching G1 level expected
    https://watchers.news/2017/04/19/geomagnetic-storms-reaching-g1-level-expected/
    Earth is under the influence of a recurrent, positive polarity coronal hole high speed stream
    (CH HSS). A G1 - Minor geomagnetic storm began at 05:59 UTC today.

    VIRGO
    VIRGO --- ---
    The Arrhythmic Beating of a Black Hole Heart | NASA
    https://www.nasa.gov/mission_pages/chandra/the-arrhythmic-beating-of-a-black-hole-heart.html

    At the center of the Centaurus galaxy cluster, there is a large elliptical galaxy called NGC 4696. Deeper still,
    there is a supermassive black hole buried within the core of this galaxy.

    New data from NASA’s Chandra X-ray Observatory and other telescopes has revealed details about this giant black hole,
    located some 145 million light years from Earth. Although the black hole itself is undetected, astronomers are learning
    about the impact it has on the galaxy it inhabits and the larger cluster around it.

    VIRGO
    VIRGO --- ---
    2014 JO25 koutek:

    Zajímavé výsledky přinesla pozorování 2014 JO25 300m reflektorem v Arecibo. Jde o kontaktní binární objekt, přičemž každý z "výběžků" (hemisfér) má
    640 - 670 metrů. Výsledná celková velikost 1,3 km je tak téměř 2x větší, než původní odhadovaná velikost z infračerveného pozorování sondou NEOWISE(!).

    Rotační perioda je přibližně 3,5 h.

    https://www.nasa.gov/feature/jpl/nasa-radar-spots-relatively-large-asteroid-prior-to-flyby

    NASA Radar Images of Asteroid 2014 JO25
    https://www.youtube.com/watch?v=usPrwjyggEM


    This composite of 30 images of asteroid 2014 JO25 was generated with radar data
    collected using NASA's Goldstone Solar System Radar in California's Mojave Desert.
    Giant asteroid 2014 JO25 flying by Earth today: How close will it come? | AL.com
    http://www.al.com/news/index.ssf/2017/04/giant_asteroid_2014_jo25_flyin.html



    2014 JO25 taken by Marian Urbanik on April 19, 2017 @ Čadca, Slovak republic



    A pokus party Virtual Telescope, ale zatím ve špatném rozlišení, spadly jim stránky..

    VIRGO
    VIRGO --- ---
    A Cosmic Burst Repeats, Deepening a Mystery | Quanta Magazine
    https://www.quantamagazine.org/20170418-fast-radio-bursts-repeat-what-are-they-made-of/

    After a surprise discovery, astrophysicists are racing to understand superenergetic flashes of radio waves that sometimes beep out from distant galaxies.

    VIRGO
    VIRGO --- ---
    Ultraviolet spectroscopic evolution of a tidal disruption event investigated by astronomers
    https://phys.org/news/2017-04-ultraviolet-spectroscopic-evolution-tidal-disruption.html

    An international team of astronomers led by Jonathan S. Brown of the Ohio State University in Columbus, Ohio,
    has studied the ultraviolet spectroscopic evolution of a nearby low-luminosity tidal disruption event (TDE)
    known as iPTF16fnl. The results of this study, published Apr. 7 on arXiv.org., offer new clues on the nature
    of this TDE.

    TDE occurs when a star passes close enough to a supermassive black hole and is pulled apart by the black hole's
    tidal forces, causing the process of disruption. Such tidally disrupted stellar debris then rains down on the black
    hole and radiation emerges from the innermost region of accreting debris, which indicates the presence of a TDE.

    DARKMOOR
    DARKMOOR --- ---
    A když si k tomu ještě vyhrabete nějaký katalog vypuštěných družic a pak je začnete sázet do vyhledávače.
    LIVE REAL TIME SATELLITE TRACKING AND PREDICTIONS
    https://www.n2yo.com/
    Mrkněte na takový Titan 3C z roku 1965.
    Nejlepší je, že když si najdeš jeden kousek, tak si pak jedním klikem můžeš vyfiltrovat všecko co ještě z daného startu zůstalo nahoře.
    JONAS3
    JONAS3 --- ---
    DARKMOOR: Slušný zásek. Na tom by se dalo prokrastinovat několik dní v kuse!
    VIRGO
    VIRGO --- ---
    DARKMOOR: Uff, u tohodle jsem se strašlivě zasekl! Skvělá práce. :)
    DARKMOOR
    DARKMOOR --- ---
    VIRGO: Taková zajímavost k tématu. Asi to tu už bylo, ale třeba to ještě někdo nezná.
    Stuff in Space
    http://stuffin.space/
    VIRGO
    VIRGO --- ---
    Space debris problem getting worse, say scientists
    https://phys.org/news/2017-04-space-debris-problem-worse-scientists.html

    Scientists sounded the alarm Tuesday over the problems posed to space missions from
    orbital junk—the accumulating debris from mankind's six-decade exploration of the cosmos.

    In less than a quarter of a century, the number of orbiting fragments large enough to
    destroy a spacecraft has more than doubled, a conference in Germany heard.

    And the estimated tally of tiny objects—which can harm or degrade spacecraft in the event
    of a collision, and are hard to track—is now around 150 million.

    Space debris - a journey to Earth (3D stereoscopic)
    https://www.youtube.com/watch?v=EzrMHWjQCtc
    VIRGO
    VIRGO --- ---
    Arecibo observed asteroid 2014 JO25 which will flyby Earth on April 19, 2017 at ~4.57 Lunar Distances.
    http://www.naic.edu/~pradar/press/2014JO25.php

    2014 JO25 was discovered in May 2014 by the Catalina Sky Survey and designated a potentially hazardous asteroid based on its size
    and relative proximity to Earth. Prior to accurate radar measurements, its diameter was estimated using data from the NEOWISE spacecraft
    to be 650 meters, more than twice the size of the Arecibo telescope's reflector. The Arecibo Observatory Planetary Radar system, which
    is the most sensitive and the most active in the world, has now provided direct measurement of this asteroid’s size, shape, rotation,
    and near-surface geology.

    “Using radar, we can illuminate a near-Earth asteroid and directly measure its features. In this case, we found 2014 JO25 to be a contact-
    binary or peanut-shaped asteroid,” noted Dr. Edgard Rivera-Valentín, Planetary Scientist with the Universities Space Research Association
    (USRA) at Arecibo Observatory. “Each lobe is between about 640 m - 670 m in diameter for a total size of about 1.3 kilometers (0.8 miles)
    along its widest point, so twice as large as inferred using infrared data from the NEOWISE spacecraft" continued Rivera-Valentín.
    Additionally, Arecibo data suggests 2014 JO25 rotates about once every 3.5 hours.

    VIRGO
    VIRGO --- ---
    On this day in 1955 - Albert Einstein died (14 March 1879 – 18 April 1955).
    Unissued / unused material: Original news announcement of the death of Albert Einstein

    Death Of Einstein (1955)
    https://www.youtube.com/watch?v=Q-asld0L2UI


    VIRGO
    VIRGO --- ---
    Our discovery of a minor planet beyond Neptune shows there might not be a 'Planet Nine' after all
    https://theconversation.com/...beyond-neptune-shows-there-might-not-be-a-planet-nine-after-all-75656

    VIRGO
    VIRGO --- ---
    https://uanews.arizona.edu/story/hydrogen-hydrogen-everywhere

    UA astronomers Huanian Zhang and Dennis Zaritsky are lifting the veil of our galactic home by providing
    the first detections of diffuse hydrogen wafting about in a vast halo surrounding the Milky Way.

    Sometimes it takes a lot of trees to see the forest. In the case of the latest discovery made by astronomers at the University of Arizona,
    exactly 732,225. Except that in this case, the "forest" is a veil of diffuse hydrogen gas enshrouding the Milky Way, and each "tree" is
    another galaxy observed with the 2.5-meter telescope of the Sloan Digital Sky Survey.

    After combining this staggering number of spectra — recorded patterns of wavelengths revealing clues about the nature of a cosmic target —
    UA astronomers Huanian Zhang and Dennis Zaritsky report the first detections of diffuse hydrogen wafting about in a vast halo surrounding
    the Milky Way. Such a halo had been postulated based on what astronomers knew about other galaxies, but never directly observed.

    VIRGO
    VIRGO --- ---
    https://www.nasa.gov/feature/nasa-and-art-a-collaboration-colored-with-history

    The relationship between the arts and sciences, to some, may resemble that of oil and water. One captures the nature of the universe through objective
    reason and data, while the other relies on expression of emotion and divergence of perception. At this intersection, however, lays a rich visual history
    that continues to bring the far reaches of the known universe closer to home.

    VIRGO
    VIRGO --- ---
    Massive exoplanet discovered using gravitational microlensing method
    https://phys.org/news/2017-04-massive-exoplanet-gravitational-microlensing-method.html

    Astronomers have found a new massive alien world using the gravitational microlensing technique. The newly detected exoplanet,
    designated MOA-2016-BLG-227Lb, is about three times more massive than Jupiter and orbits a distant star approximately 21,000
    light years away. The finding was published Apr. 6 in a paper on arXiv.org.

    VIRGO
    VIRGO --- ---
    Habitable Planet Reality Check: Kepler 186f Revisited | Drew Ex Machina
    http://www.drewexmachina.com/2016/04/17/habitable-planet-reality-check-kepler-186f-revisited/

    VIRGO
    VIRGO --- ---
    Landslides on Ceres Reflect Hidden Ice
    http://www.news.gatech.edu/2017/04/17/landslides-ceres-reflect-hidden-ice

    Massive landslides, similar to those found on Earth, are occurring on the asteroid Ceres. That’s according to a new study led
    by the Georgia Institute of Technology, adding to the growing evidence that Ceres retains a significant amount of water ice.

    The study is published in the journal Nature Geoscience. It used data from NASA’s Dawn spacecraft to identify three different
    types of landslides, or flow features, on the Texas-sized asteroid.

    VIRGO
    VIRGO --- ---
    VIRGO: Přenos běží:
    NASA TV Public-Education
    https://www.youtube.com/watch?v=UdmHHpAsMVw
    VIRGO
    VIRGO --- ---
    Za hodinu se otevírá první startokno pro ATK CRS-7! Poprvé ve volitelném pohledu 360 stupňů.
    Atlas V Rocket Poised for Space Station Cargo Run Today
    http://www.space.com/36493-atlas-v-rocket-cygnus-launching-space-cargo-tuesday.html

    Orbital ATK CRS-7 Atlas V Rolls to Launch Pad
    https://www.youtube.com/watch?v=4zbQAZpeP58
    Kliknutím sem můžete změnit nastavení reklam