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    VIRGOCosmos In Brief - Aktualní novinky vesmírného výzkumu v kostce
    VIRGO
    VIRGO --- ---
    +1
    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 --- ---
    +1
    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 --- ---
    1 odpověď
    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
    VIRGO
    VIRGO --- ---
    +2
    This may look like traffic lights (semáforo in Spanish), but it is a device
    to measure the intensity of the UV Sun radiation. It is called "solmaforo".

    VIRGO
    VIRGO --- ---
    https://www.nasa.gov/...oddard/2017/nasa-team-explores-using-lisa-pathfinder-as-comet-crumb-detector

    LISA Pathfinder, a mission led by ESA (the European Space Agency) with contributions from NASA, has successfully demonstrated
    critical technologies needed to build a space-based observatory for detecting ripples in space-time called gravitational waves.
    Now a team of NASA scientists hopes to take advantage of the spacecraft's record-breaking sensitivity to map out the distribution
    of tiny dust particles shed by asteroids and comets far from Earth.

    Most of these particles have masses measured in micrograms, similar to a small grain of sand. But with speeds greater than
    22,000 mph (36,000 kph), even micrometeoroids pack a punch. The new measurements could help refine dust models used by researchers
    in a variety of studies, from understanding the physics of planet formation to estimating impact risks for current and future spacecraft.

    NASA Team Explores Using LISA Pathfinder as a 'Comet Crumb' Detector
    https://www.youtube.com/watch?v=c5-mQ62yxt0
    VIRGO
    VIRGO --- ---
    +1
    Voyager 1's Getting Closer to Earth Right Now
    https://www.youtube.com/watch?v=YLlzx6v8CcA
    VIRGO
    VIRGO --- ---
    OSIRIS-REx is currently 114 million kilometers from Earth. That's roughly 300 times the distance between Earth and the Moon.
    Where is the Spacecraft? - OSIRIS-REx Mission
    http://www.asteroidmission.org/where-is-the-spacecraft/

    VIRGO
    VIRGO --- ---
    Supermassive black holes found in two tiny galaxies | UNews
    https://unews.utah.edu/supermassive-black-holes-found-in-two-tiny-galaxies/

    Formation of the dwarf galaxy M60-UCD1
    https://www.youtube.com/watch?v=KN4AKFF68pE


    Three years ago, a University of Utah-led team discovered that an ultra-compact dwarf galaxy contained a supermassive black hole, then the smallest known galaxy to harbor such a giant
    black hole. The findings suggested that the dwarfs were likely tiny leftovers of larger galaxies that were stripped of their outer layers after colliding into other, larger galaxies.

    Now, the same group of U astronomers and colleagues have found two more ultra-compact dwarf galaxies with supermassive black holes. Together, the three examples suggest that black holes
    lurk at the center of most of these objects, potentially doubling the number of supermassive black holes known in the universe. The black holes make up a high percentage of the compact
    galaxies’ total mass, supporting the theory that the dwarfs are remnants of massive galaxies that were ripped apart by larger galaxies.

    VIRGO
    VIRGO --- ---
    +2
    https://www.nasa.gov/image-feature/jpl/pia20528/watercolor-world

    This view was taken from a vantage point about 28 degrees above Saturn's equator. The image was taken with the Cassini spacecraft wide-angle camera
    on Dec. 2, 2016, with a combination of spectral filters which preferentially admits wavelengths of near-infrared light centered at 728 nanometers.
    The view was acquired at a distance of approximately 953 000 kilometers from Saturn. Image scale is 57 kilometers per pixel.

    VIRGO
    VIRGO --- ---
    +1
    Blowing cosmic bubbles | ESA/Hubble
    https://www.spacetelescope.org/images/potw1716a/

    This entrancing image shows a few of the tenuous threads that comprise Sh2-308,
    a faint and wispy shell of gas located 5200 light-years away in the constellation of Canis Major (The Great Dog).

    Sh2-308 is a large bubble-like structure wrapped around an extremely large, bright type of star known as a Wolf-Rayet Star —
    this particular star is called EZ Canis Majoris. These type of stars are among the brightest and most massive stars in the Universe,
    tens of times more massive than our own Sun, and they represent the extremes of stellar evolution. Thick winds continually poured off
    the progenitors of such stars, flooding their surroundings and draining the outer layers of the Wolf-Rayet stars. The fast wind of
    a Wolf-Rayet star therefore sweeps up the surrounding material to form bubbles of gas.

    VIRGO
    VIRGO --- ---
    Penn Researchers Provide New Insight Into Dark Matter Halos | Penn News
    https://news.upenn.edu/news/penn-researchers-provide-new-insight-dark-matter-halos

    Research from the University of Pennsylvania could shed light on the distribution of one of the most mysterious substances in the universe.

    In the 1970s, scientists noticed something strange about the motion of galaxies. All the matter at the edge of spiral galaxies was rotating just
    as fast as material in the inner part of the galaxy. But according to the laws of gravity, objects on the outskirts should be moving slower.

    Many scientists now believe that more than 80 percent of the matter of the universe is locked away in mysterious, as yet undetected, particles of
    dark matter, which affect everything from how objects move within a galaxy to how galaxies and galaxy clusters clump together in the first place.

    This dark matter extends far beyond the reach of the furthest stars in the galaxy, forming what scientists call a dark matter halo. While stars
    within the galaxy all rotate in a neat, organized disk, these dark matter particles are like a swarm of bees, moving chaotically in random
    directions, which keeps them puffed up to balance the inward pull of gravity.

    VIRGO
    VIRGO --- ---
    A Search For the Theory of Everything - The Great Courses Daily
    http://www.thegreatcoursesdaily.com/the-theory-of-everything/

    The unifying theories of physics are among the greatest and most complex in all of science; their progression toward ever-grander
    insights will transform our understanding of the universe, and is nothing less than a search for the theory of everything.
    VIRGO
    VIRGO --- ---
    +2
    Great Cold Spot discovered on Jupiter | ESO Australia
    http://www.eso.org/public/australia/images/potw1716a/

    Velká rudá skvrna na Jupiteru je ohromná bouře, která po staletí víří rychlostmi převyšujícími 600 km za hodinu. Do ní by se vešlo několik Zemí.
    Ale teď má rivala: astronomové objevili, že Jupiter má druhou velkou skrvnu, tentokrát chladnou.

    V polárních oblastech planety objevili astronomové pomocí přístroje CRIRES na dalekohledu ESO VLT a také pomocí jiných zařízení tmavou skvrnu
    v horní atmosféře Jupiteru (na obrázku vlevo pod polární září). Je asi o 200 °C chladnější než její okolí. Tento zajímavý jev - příhodně nazvaný
    "velká chladná skvrna" - je velikostně podobná velké rudé skvrně. Má asi 24 000 km napříč a 12 000 km na výšku. Ale data pořízená během patnácti
    let ukazují, že velká chladná skvrna je mnohem nestálejší než její téměř neměnná společnice. V rámci dnů a týdnů se výrazně mění její tvar a
    velikost, ale nikdy nemizí a vždy zůstává na přibližně stejném místě.

    O velké chladné skvrně se předpokládá, že je způsobena silnou polární září planety, která přenáší energii do atmosféry v podobě tepla proudícího
    kolem Jupiteru. Tím vytváří chladnější oblast v horní atmosféře, což je tím pádem první povětrnostní systém či jev způsobený polární září, který
    byl kdy pozorován.

    VIRGO
    VIRGO --- ---
    +1
    Comet Lovejoy Seen From International Space Station
    https://www.youtube.com/watch?v=viDjSbWEsb8
    VIRGO
    VIRGO --- ---
    +1
    https://saturn.jpl.nasa.gov/raw_images/411459/

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