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    VIRGOCosmos In Brief - Aktualní novinky vesmírného výzkumu v kostce
    VIRGO
    VIRGO --- ---
    Comet Swarms or Alien Megastructures? The Strange Variations of the Star KIC 8462852
    https://www.youtube.com/watch?v=V12SsidtIUc
    VIRGO
    VIRGO --- ---
    How the darkness and the cold killed the dinosaurs | EurekAlert! Science News
    https://www.eurekalert.org/pub_releases/2017-01/pifc-htd011317.php

    66 million years ago, the sudden extinction of the dinosaurs started the ascent of the mammals, ultimately resulting in humankind's reign on Earth.
    Climate scientists now reconstructed how tiny droplets of sulfuric acid formed high up in the air after the well-known impact of a large asteroid
    and blocking the sunlight for several years, had a profound influence on life on Earth. Plants died, and death spread through the food web. Previous
    theories focused on the shorter-lived dust ejected by the impact. The new computer simulations show that the droplets resulted in long-lasting cooling,
    a likely contributor to the death of land-living dinosaurs. An additional kill mechanism might have been a vigorous mixing of the oceans, caused by
    the surface cooling, severely disturbing marine ecosystems.

    VIRGO
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    First 'animal cells' could have been created by viruses
    https://theconversation.com/first-animal-cells-could-have-been-created-by-viruses-71202

    When a virus infects a living cell, it hijacks and reprograms the cell to turn it into a virus-producing factory. Now scientists
    at the University of California have for the first time discovered just how extensive that reprogramming can be, effectively turning
    bacterial cells into animal or plant-like cells. This might even be how the cells of more complex organisms evolved in the first place.

    The study shows that when a virus hijacks a bacterial cell, it quickly destroys the cell’s normal structure, including its DNA. It then
    builds new structures that strongly resemble the nuclei found in animal, human and plant cells. The nucleus is the genetic control centre
    of a cell of such a “higher” lifeform but has never been seen before in a bacterial cell. This suggests that higher cells might have
    first evolved from ancient interactions between bacteria and viruses.
    VIRGO
    VIRGO --- ---
    K sobotnímu 12. výročí..
    Cassini: Mission to Saturn: Catching Cassini's Call
    https://saturn.jpl.nasa.gov/news/2989/catching-cassinis-call/

    This week, ESA deep-space radio dishes on two continents are listening for signals from the international Cassini spacecraft,
    now on its final tour of Saturn.
    ESA's sensitive tracking antennas at New Norcia, Western Australia, and Malargüe, Argentina, are being called in to help with
    crucial observations during Cassini's last months in orbit, dubbed the 'Grand Finale.'

    VIRGO
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    How Complex Cellular Life May Have Emerged - Astrobiology
    http://astrobiology.com/2017/01/how-complex-cellular-life-may-have-emerged.html

    In a new study, published in Nature this week, an international research group led from Uppsala University in Sweden
    presents the discovery of a group of microbes that provide new insights as to how complex cellular life emerged.

    The study provides new details of how, billions of years ago, complex cell types that comprise plants, fungi,
    but also animals and humans, gradually evolved from simpler microbial ancestors.
    VIRGO
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    JULIANNE: no to je jasný, Messenger byla moje srdcovka... :)
    JULIANNE
    JULIANNE --- ---
    VIRGO: To ano, ale u srovnání Venuše a Marsu to není zas tak veliký rozdíl díky tomu, že Venuše je blíž.
    Merkur už je oříšek :).
    VIRGO
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    The SPT-3G focal plane during assembly at the South Pole: 2700 (3-color) pixels, 16 000 superconducting detectors cooled to 0.25 Kelvin!

    VIRGO
    VIRGO --- ---
    The AAS announces that its Division on Dynamical Astronomy Early Career Prize will be named in honor of Vera Rubin.
    Vera Rubin Early Career Prize | Division on Dynamical Astronomy
    https://dda.aas.org/awards/rubin

    VIRGO
    VIRGO --- ---
    JULIANNE: Ale dostat se ke Slunci paradoxně znamená vyvinout větší rychlost,
    tedy víc energie, ne? (Tak jsem to myslel, tedy pokud se mi to neplete.)
    JULIANNE
    JULIANNE --- ---
    NEBULA: K Venuši se dostaneme rychleji než k Marsu a startovní okna jsou častější. Energie pro solární panely je víc než dost. Pro orbitery nebo atmosférické (třeba balonové) sondy je to super lokalita!
    Povrch už je samozřejmě něco jiného...
    VIRGO
    VIRGO --- ---
    deimos imaging – World’s largest radio telescopes captured by Deimos-2
    http://www.deimos-imaging.com/worlds-largest-radio-telescopes-captured-by-deimos-2

    Deimos-2 captured the two world’s largest radio telescopes: the Arecibo Observatory and the Five-hundred-meter Aperture Spherical
    Telescope (FAST). The images show the proportions of both, allowing to appreciate the great difference between their diameters.

    VIRGO
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    Weekly Space Hangout - Jan 13, 2017: News Roundup Plus Update on Tabby's Star!
    https://www.youtube.com/watch?v=qqGJxgAAHQA
    VIRGO
    VIRGO --- ---
    Úžasný chlápek. Zapálený popularizátor, ale především astrofyzik STScI (je součástí vědeckého týmu Hubbleova teleskopu). Jen krátké Q&A:
    HubbleSite - Hubble's Universe Unfiltered - Questions about Life from Fourth Graders
    http://hubblesite.org/.../hubbles_universe_unfiltered/blogs/questions-about-life-from-fourth-graders

    VIRGO
    VIRGO --- ---
    NEBULA: Z dlouhodobého hlediska (obyvatelnosti) je jediná cesta dál od Slunce.
    Nestabilita se bude zhoršovat. Ale souhlasím s Darkmoorem, že její studium je důležité už kvůli tomu,
    aby to na Zemi neskončilo podobně co se týče klimatických podmínek.

    Dostávat se blíž ke Slunci je i náročnější, ale hlavně na povrchu Venuše probíhá mejdan,
    na kterém fakt nemáme co pohledávat.
    NEBULA
    NEBULA --- ---
    DARKMOOR: tak u venuše je ten "nezájem" snad daný tím, že je tak blízko slunci ne? tím myslím, že oproti marsu je asi dost problematické (nákladné) právě takový průzkum tam učinit? domnívám se.
    VIRGO
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    The LISA Mission proposal was submitted today!

    In response to the call of the European Space Agency (ESA) for L3 mission concepts,
    the LISA Mission consortium submitted the proposal for the Laser Interferometer Space Antenna today.

    The proposal document will be published in a few days on the LISA Mission homepage.

    LISA - mission concept proposal
    https://www.lisamission.org/consortium/

    VIRGO
    VIRGO --- ---
    No Launch for NASA's NEOCam Worries Asteroid Hunters - Seeker
    http://www.seeker.com/nasa-asteroid-space-telescope-b412-foundation-astronomy-2190478730.html

    The B612 Foundation reacts to NASA's decision not to fund a hazardous asteroid-hunting mission,
    urging the next administration to fund an infrared space telescope that would seek out near-Earth asteroid threats.

    VIRGO
    VIRGO --- ---
    Mystery Object in Cygnus A Galaxy - Sky & Telescope
    http://www.skyandtelescope.com/astronomy-news/mystery-object-in-cygnus-a-galaxy-1301201623/

    Astronomers have discovered an object in the active galaxy Cygnus A that wasn’t there before.

    Last week at the American Astronomical Society meeting in Grapevine, Texas, astronomers made an announcement
    that’s caught the interest of several researchers: a very bright something has appeared in a well-known galaxy.

    That galaxy is the elliptical Cygnus A. Cygnus A is one of the brightest radio sources in the sky. It lies approximately 800 million
    light-years from us (redshift of 0.056). In its core sits a supermassive black hole madly eating and cocooned in gas, while two jets
    shoot out to either side and light up the intergalactic medium. This activity produces the radio radiation that makes Cygnus A so bright.

    Using the recently upgraded Karl G. Jansky Very Large Array (VLA) in New Mexico, Rick Perley (NRAO) and colleagues took a gander at Cygnus
    A — the first time the instrument has looked at the galaxy since 1989. (Apparently astronomers spent so much VLA time observing the galaxy
    in the 1980s that they didn’t feel the need to look again, Perley joked January 6th in his AAS presentation.) The new observations showed
    a surprise: a new, secondary object just southwest of the central black hole. This object wasn’t in the 1989 radio image. Additional, higher-
    resolution observations with the Very Long Baseline Array also picked up the object, clearly distinct from the galaxy’s nucleus. It’s roughly
    1,300 light-years from the center.

    The whatever-it-is is about twice as bright as the brightest known supernova at these frequencies. In fact, it’s much brighter than just about
    any transitory radio signal known, except for accreting supermassive black holes and tidal disruption events, outbursts created when a black
    hole eats a star.

    The team scoured other archives and found the object in 2003 Keck infrared observations and, more iffily, in some images from Hubble.
    (The object is so red that it doesn’t show up well at optical wavelengths, and in this range the space telescope’s resolution isn’t as
    good as that of Keck’s adaptive optics.)

    VIRGO
    VIRGO --- ---
    L3 magnet doors open, the ALICE experiment exposes its inner components to the (artificial) day light for the first time in years.
    In the center, the beam pipe. On the left, the low-beta platform (visitors view point). On top, the crane used to move material
    around the ALICE experimental area. The doors will be closed mid-April, in preparation for the 2017 beams.

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