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    VIRGOCosmos In Brief - Aktualní novinky vesmírného výzkumu v kostce
    VIRGO
    VIRGO --- ---
    Impostor planet exposed by astronomers
    http://phys.org/news/2016-11-impostor-planet-exposed-astronomers.html

    Don't be fooled by its light curve exhibiting anomalies like those caused by planets—one microlensing event with a fancy name OGLE-2016-BLG-0733
    is doing a really good job of mimicking an extrasolar world. This case of a binary-source event masquerading as a planet could have further
    implications for the search of exoplanets using the gravitational microlensing method.

    In contrast to other methods, microlensing is most sensitive for detecting planets around one to 10 AU away from their host stars. This method
    is also used to find new exoworlds around faint and dark objects at or beyond the snow line, and those not gravitationally bound to their parent
    stars. However, the correct interpretation of the signal provided by the microlensing method is often difficult due to various scenarios that
    can mimic planetary signals.

    VIRGO
    VIRGO --- ---
    +1
    LSST camera - The largest camera for astronomy
    https://lsst.slac.stanford.edu/

    VIRGO
    VIRGO --- ---
    +2
    Přístroj SPHERE odhaluje protoplanetární disky modelované nově zrozenými planetami
    Formování planetárních systémů | ESO Česko
    https://www.eso.org/public/czechrepublic/news/eso1640/?lang

    Nová detailní pozorování pomohla odhalit působivé struktury v protoplanetárních discích kolem mladých hvězd. Přístroj SPHERE, který pracuje ve spojení
    s dalekohledem ESO/VLT, vědcům umožnil zkoumat složité dynamické procesy v mladých planetárních systémech. U jedné ze sledovaných soustav byl dokonce
    pozorován vývoj doslova v reálném čase. Nedávno publikované výsledky získané trojicí vědeckých týmů dokládají mimořádné schopnosti přístroje SPHERE, který
    umožňuje přímo pozorovat, jakým způsobem planety formují disky, ze kterých se rodí. Odhaluje tak komplexnost prostředí, ve kterém se nové světy utvářejí.

    Moderní přístroj SPHERE, který pracuje ve spojení s dalekohledem ESO/VLT (Very Large Telescope) na observatoři Paranal (Paranal Observatory) v Chile, je
    určen k pátrání po exoplanetách (exoplanets). Trojice vědeckých týmů jej nedávno použila ve snaze po odhalení tajemství vývoje mladých planetárních systémů.
    Extrémní nárůst počtu známých exoplanet v uplynulých letech učinil z jejich výzkumu jeden z nejdynamičtěji se rozvíjejících oborů moderní astronomie

    VIRGO
    VIRGO --- ---
    http://phys.org/news/2016-11-comet-67pchuryumov-gerasimenko-younger-previously-thought.html

    Based on computer simulations, astrophysicists at the University of Bern, Switzerland, conclude that the comet Chury
    did not obtain its duck-like form during the formation of our solar system 4.5 billion years ago. Although it does contain
    primordial material, they are able to show that the comet in its present form is hardly more than a billion years old.

    VIRGO
    VIRGO --- ---
    +4
    Corey S. Powell: Pluto is a twilight world. Processing by New Horizons IMG pierces the gloom to reveal new details on the night side.

    VIRGO
    VIRGO --- ---
    Starvation Diet for Black Hole Dims Brilliant Galaxy | NASA
    https://www.nasa.gov/...sion_pages/chandra/starvation-diet-for-black-hole-dims-brilliant-galaxy.html

    Astronomers may have solved the mystery of the peculiar volatile behavior of a supermassive black hole
    at the center of a galaxy. Combined data from NASA’s Chandra X-ray Observatory and other observatories
    suggest that the black hole is no longer being fed enough fuel to make its surroundings shine brightly.

    XCHAOS
    XCHAOS --- ---
    New theory of gravity might explain dark matter
    http://phys.org/news/2016-11-theory-gravity-dark.html
    VIRGO
    VIRGO --- ---
    Is Earth Our Solar System's Missing 'Super-Earth?'
    http://www.forbes.com/...ang/2016/11/08/is-earth-our-solar-systems-missing-super-earth/#6fcca5477161

    It wasn’t that long ago that we thought our Solar System was the prototype for how planetary systems ought to be configured.
    We thought that there were two classes of planets: the rocky worlds, that we’d find clustered in the inner regions, and the
    gas giants, located farther out. Starting in the 1990s, we finally began discovering planets around stars other than our own,
    and we were in for not just one but two rude awakenings, and we discovered our Solar System was not normal. In a new paper
    just accepted for publication this week, two Columbia University astrophysicists might have just explained why.

    VIRGO
    VIRGO --- ---
    Modest Chaos in the Early Solar System
    http://aasnova.org/2016/11/08/modest-chaos-in-the-early-solar-system/

    The puzzling architecture of the Solar system has long been a headache for planetary dynamicists. We can sort of divide its structure
    (cover image, not to scale) into several zones. First, the terrestrial planets Mercury, Venus, Earth and Mars, which are divided from
    the gas and ice giant planets by the asteroid belt. Beyond the ice giants there is the Kuiper belt, which spans out to very large
    distances from the Sun. One longstanding conundrum in this ordering is the relatively small mass of Mars and existence of the asteroid
    belt in between Mars and Jupiter. It shouldn’t be there, and Mars should be way bigger. In fact, Mars is only 10% of the mass of Earth
    and therefore seems to have never accreted enough material to become a fully fledged planet. In planet formation, Mars-sized objects
    are usually termed “planetary embryos”, as we think this is the intermediate stage of a planet’s growth.

    VIRGO
    VIRGO --- ---
    A Brief History of Halley’s Comet Sightings - History in the Headlines
    http://www.history.com/news/a-brief-history-of-halleys-comet-sightings

    Roughly every 76 years, Halley’s comet passes close enough to the Earth to be viewed with the naked eye.
    Astronomer Edmond Halley first predicted the comet’s recurrence in the early 1700s, but sightings of it
    date back to at least the third century B.C., and it’s often taken a starring role in historical events.
    From ancient omens to a 1910 apocalyptic panic, take a look back at how astronomy’s most famous comet
    has been interpreted over the years.

    VIRGO
    VIRGO --- ---
    +2
    November 14th's Super-Close Full Moon - Sky & Telescope
    http://www.skyandtelescope.com/press-releases/november-14-super-close-full-moon/
    The full Moon on Monday, November 14th, will be a little bigger and brighter than normal,
    because on that day the Moon will be closer to Earth than it's been in nearly 69 years.

    VIRGO
    VIRGO --- ---
    Yes, Dark Energy Exists - COSI Science Now
    https://www.youtube.com/watch?v=lxkglzjI-Iw


    --

    http://www.forbes.com/.../solution-to-dark-matter-proposes-that-gravity-is-an-illusion/#4699d6693058
    VIRGO
    VIRGO --- ---
    Exoplanet hunters are missing 75 per cent of two-star worlds | New Scientist
    https://www.newscientist.com/...112005-exoplanet-hunters-are-missing-75-per-cent-of-two-star-worlds/

    Binaries are twice the trouble. The shifty geometry of planets that orbit two stars
    means we’ve missed about 75 per cent of these worlds – but we are playing catch-up.

    Planets that orbit two stars are truly, intriguingly alien – they have varied seasons,
    and formed under different circumstances from planets in our own solar system. They are
    also trickier to discover and study: unlike planets around single stars, they shift
    their orbital paths over just a few years.

    The Kepler telescope has spotted 10 of these worlds by watching them transit, or cross
    in front of their stars from our point of view. Transits around just one star run like
    clockwork: once you know how long the planet’s year is, you can predict exactly when it
    should next pass in front of the star.
    VIRGO
    VIRGO --- ---
    +1
    Už asi po páté vidím krátký úryvek této nové série, a všechny jsou úžasné! To musím vidět...
    There's New Footage of That Baby Iguana Battling Killer Snakes
    http://gizmodo.com/new-footage-shows-baby-iguana-battling-killer-snakes-in-1788705625

    Iguana vs Snakes - Behind the Scenes - Planet Earth II
    https://www.youtube.com/watch?v=2cOMjZWJyog
    ATOMIKS
    ATOMIKS --- ---
    +6
    VIRGO: našli tam kovový meteorit
    http://www.nasa.gov/feature/jpl/curiosity-mars-rover-checks-odd-looking-iron-meteorite
    Iron-nickel meteorites are a common class of space rocks found on Earth, and previous examples have been seen on Mars, but this one, called "Egg Rock," is the first on Mars examined with a laser-firing spectrometer. To do so, the rover team used Curiosity's Chemistry and Camera (ChemCam) instrument.
    Researchers will be analyzing the ChemCam data from the first few laser shots at each target point and data from subsequent shots at the same point, to compare surface versus interior chemistry.
    VIRGO
    VIRGO --- ---
    Here's Our Response Plan for an Incoming Asteroid
    http://futurism.com/heres-our-response-plan-for-an-incoming-asteroid/
    NASA and FEMA have started training in anticipation of that very real threat. The two agencies recently held
    a series of exercises that tested readiness and possible response in the event of a large asteroid impacting Earth.

    In the hypothetical exercise, NASA and FEMA were posed with an object 100 to 250 meters striking Earth in 2020.
    The exercise didn’t give the agencies enough time to mount an asteroid deflection, but they could plan evacuations,
    the level of information dissemination, and ways to prevent panic.

    Discovery Channel - Large Asteroid Impact Simulation
    https://www.youtube.com/watch?v=bU1QPtOZQZU
    VIRGO
    VIRGO --- ---
    New flowchart to eliminate Universe models
    Leiden Institute of Physics - item
    http://www.physics.leidenuniv.nl/index.php?id=11573&news=990&type=LION&ln=EN

    Cosmologists have many possible models for the Universe, of which only one can be true. A new flowchart will eliminate
    some of them when two specific Universe features are accurately measured. Publication in Physical Review D on 7 November.

    Cosmologists try to understand how the entire Universe formed and evolves. In short, cosmology is the science of everything,
    except for that pale blue dot floating around in the vastness of space. By aiming their telescopes at distant galaxies and
    the afterglow of the Big Bang, cosmologists look back in time and pick up pieces of the puzzle. They put these pieces as
    parameters in the many possible models they have created for our Universe. The more parameters are precisely measured,
    the more models can be excluded.

    VIRGO
    VIRGO --- ---
    Solved: One of the mysteries of globular clusters | EurekAlert! Science News
    https://www.eurekalert.org/pub_releases/2016-11/idad-soo110816.php

    A study shows that the most massive stars in the last stages of their lives are those which contaminate the interstellar
    medium with new chemical elements, giving rise to successive generations of stars in these 'astronomical fossils'

    VIRGO
    VIRGO --- ---
    Researchers discover UGC 3672 galaxy to be an unusual merging triplet of gas-rich dwarf galaxies
    http://phys.org/news/2016-11-ugc-galaxy-unusual-merging-triplet.html

    Astronomers from India and Russia revealed new information about the composition of the galaxy UGC 3672. According to a paper published
    Nov. 4 on the arXiv pre-print server, UGC 3672 is actually a triplet of very gas-rich dwarf galaxies in the process of merging.

    UGC 3672 is located near the center of the nearby Lynx-Cancer intergalactic void. This void, which is about 59 million light years away
    from Earth, was recently a subject of detailed surveys due to its relative proximity. Lynx-Cancer gives scientists the opportunity to
    study galaxies to a much fainter mass and luminosity limit than have been done in more distant voids.

    VIRGO
    VIRGO --- ---
    New Theory of Gravity Might Explain Dark Mattter - Delta Institute for Theoretical Physics
    http://www.d-itp.nl/...r/press-releases/2016/11/new-theory-of-gravity-might-explain-dark-matter.html

    A new theory of gravity might explain the curious motions of stars in galaxies. Emergent gravity, as the new theory is called,
    predicts the exact same deviation of motions that is usually explained by inserting dark matter in the theory. Prof. Erik Verlinde,
    renowned expert in string theory at the University of Amsterdam and the Delta Institute for Theoretical Physics, published a new
    research paper today in which he expands his groundbreaking views on the nature of gravity.
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