• úvod
  • témata
  • události
  • tržiště
  • diskuze
  • nástěnka
  • přihlásit
    registrace
    ztracené heslo?
    VIRGOCosmos In Brief - Aktualní novinky vesmírného výzkumu v kostce
    VIRGO
    VIRGO --- ---
    VIRGO
    VIRGO --- ---
    Srpek s rudou skvrnou. Procesing: Roman Tkačenko

    VIRGO
    VIRGO --- ---
    NEBULA: Simtě odkud tu informaci máš? (2017 větší počet asteroidů)
    Jen jestli to má vůbec smysl hledat.

    Dráha 2017 AG13. Je mi záhadou, proč dnes upoutal tolik pozornosti. Sice půlka vzdálenosti ZM
    je kousínek, ale i kdyby vletěl do atmosféry, udělá +/- tyjátr Čeljabinskýho (má max. nějakých
    35-40m) a je to jeden z těch pomalejších (necelých 16 km/s vůči Zemi). Hledal jsem večer, jestli
    jej někdo nezkouší monitorovat (opticky/radiově....), ale zatím nic. Uvidíme zítra.

    NEBULA
    NEBULA --- ---
    Tak diáře do ruky a.......
    Lenka Soumarová: Astronomické úkazy roku 2017
    http://www.aldebaran.cz/bulletin/2017_01_obs.php

    ps: povšimněte si krásných pastelkokreseb, stojí za to ;)
    NEBULA
    NEBULA --- ---
    A smallish asteroid zoomed past Earth this morning (Jan. 9), just two days after scientists first spotted the space rock.

    The asteroid, known as 2017 AG13, flew by our planet at just half the distance from Earth to the moon today at 7:47 a.m. EST (1247 GMT). (On average, the moon lies about 239,000 miles, or 385,000 kilometers, from Earth.)

    a taky jsme prý od roku 2017 vystaveni vyššímu počtu asteroidů... nevím proč? jakože jindy ne?...nebo je to jen takový období?
    VIRGO
    VIRGO --- ---
    Dalekohled VLT bude pátrat po planetách v systému Alfa Centauri | ESO Česko
    http://www.eso.org/public/czechrepublic/news/eso1702/?lang
    ESO a Breakthrough Initiatives podepsali dohodu o spolupráci

    ESO podepsala dohodu se zástupci společnosti Breakthrough Initiatives týkající se úprav přístrojového vybavení dalekohledu ESO/VLT pro pátrání po planetách
    v blízkém hvězdném systému Alfa Centauri. Tyto planety by se v budoucnu mohly eventuálně stát cílem výzkumu prostřednictvím miniaturních kosmických sond
    navržených v rámci projektu Starshot (Breakthrough Starshot initiative).

    VIRGO
    VIRGO --- ---
    Asymmetric structure in the supermassive black hole at the galaxy's center
    http://phys.org/news/2017-01-asymmetric-supermassive-black-hole-galaxy.html

    The supermassive black hole candidate at the center of our Galaxy (associated with the radio source Sgr A*) is a prime candidate for studying
    the physical phenomena associated with accretion on to a supermassive black hole. Sgr A* is thought to accrete at an extremely low rate;
    analogous situations in X-ray binary stars suggest that a jet may be present, making it challenging to formulate a fully self-consistent model
    that simultaneously explains its spectrum, its variability, its size and its shape. Because Sgr A* is by far the closest supermassive black hole,
    its expected angular size (the shadow cast from its event horizon) is the largest of any known black hole candidate, making it a prime target for
    studies using very long baseline interferometry at mm wavelengths, which are capable of reaching spatial resolutions comparable to the expected
    shadow size.

    VIRGO
    VIRGO --- ---
    Study crashes main Moon-formation theory
    http://phys.org/news/2017-01-main-moon-formation-theory.html

    Such a bombardment birth would explain a major inconsistency in the prevailing hypothesis that the Moon splintered off in a single, giant impact
    between Earth and a Mars-sized celestial body. In such a scenario, scientists expect that about a fifth of the Moon's material would have come from
    Earth and the rest from the impacting body. Yet, the makeup of the Earth and the Moon are near identical—an improbability that has long perplexed
    backers of the single-impact hypothesis."The multiple impact scenario is a more 'natural' way of explaining the formation of the Moon," said Raluca
    Rufu of the Weizmann Institute of Science in Rehovot, who co-authored the new study published in the journal Nature Geoscience.

    VIRGO
    VIRGO --- ---
    Outflowing Gas in Ultraluminous Galaxiessu201701 | www.cfa.harvard.edu/
    https://www.cfa.harvard.edu/news/su201701

    Galaxies evolve over billions of years in part through the activity of star formation and their supermassive nuclear black holes,
    and also by mergers with other galaxies. Some features of galaxies, in particular the strong correlations found between the mass
    of the central black hole and properties like galaxy velocity structure or luminosity, imply a fundamental connection between
    the growth of the nuclear black hole and the assembly of stars on a global scale. Feedback of some kind is therefore expected to
    explain these tight correlations, and astronomers have been working to identify and study it. One prominent suggestion for feedback
    is the presence of warm outflowing gas, powered by new stars but which would deplete the galaxy of the raw material needed for
    making new stars, and/or for enhancing the black hole mass.

    VIRGO
    VIRGO --- ---
    https://www.nasa.gov/image-feature/jpl/pia20515/mimas-mountain

    Shadows cast across Mimas' defining feature, Herschel Crater, provide an indication of the size of the crater's towering walls and central peak.
    Named after the icy moon's discoverer, astronomer William Herschel, the crater stretches 139 kilometers wide - almost one-third of the diameter
    of Mimas (396 kilometers) itself. Large impact craters often have peaks in their center. Herschel's peak stands nearly as tall as Mount Everest
    on Earth.

    This view looks toward the anti-Saturn hemisphere of Mimas. North on Mimas is up and rotated 21 degrees to the left. The image was taken with
    the Cassini spacecraft narrow-angle camera on Oct. 22, 2016 using a combination of spectral filters which preferentially admits wavelengths of
    ultraviolet light centered at 338 nanometers. The view was acquired at a distance of approximately 185 000 kilometers from Mimas and at a Sun-
    Mimas-spacecraft, or phase, angle of 20 degrees. Image scale is 1 kilometer per pixel.

    VIRGO
    VIRGO --- ---
    Krásný koberec. MAHLI, Sol 1570, 4. leden 2017

    VIRGO
    VIRGO --- ---
    VIRGO
    VIRGO --- ---
    A montage of Hand-Lens images of Curiosity's weather 'Booms' located on the mast. These are part of the Rover Environmental Monitoring
    Station (REMS) and are being checked out as part of an investigation to a malfunction of one of the wind speed indicators.

    VIRGO
    VIRGO --- ---
    A new CERN experiment targets even higher energies (eventually) | Science | The Guardian
    https://www.theguardian.com/.../jan/08/a-new-cern-experiment-targets-even-higher-energies-eventually

    The AWAKE experiment at CERN made a breakthrough at the end of last year. A long-term technology-development project, its aim is
    to drag electrons through a plasma, behind a beam of protons, and provide a route to higher energies than the Large Hadron Collider

    HOWKING
    HOWKING --- ---
    V jeho případě si říkám, ještě že jsou ty technologie. Nejen že by jinak takový mozek byl uzavřený před světem a znalostmi, ale hlavně by byl svět odříznut od takového mozku!
    VIRGO
    VIRGO --- ---
    VIRGO: Tak zítra nic... Přesunuto na 14. ledna.
    SpaceX Falcon 9 RTF postponed to Jan. 14 - SpaceFlight Insider
    http://www.spaceflightinsider.com/...ploration-technologies/spacex-falcon-9-rtf-postponed-to-jan-14/
    VIRGO
    VIRGO --- ---
    HOWKING: tak pardon, už dnes. :)
    Backreaction: Stephen Hawking turns 75. Congratulations! Here’s what to celebrate.
    http://backreaction.blogspot.cz/2017/01/stephen-hawking-turns-75.html
    Sabine Hossenfelder

    VIRGO
    VIRGO --- ---
    Start Rolling Your Blunts: Spherical Planetarium Videos Are Here | Motherboard
    http://motherboard.vice.com/read/spherical-planetarium-videos

    The Aquarius simulation
    https://www.youtube.com/watch?v=6NIr2zYtHRQ
    VIRGO
    VIRGO --- ---
    Bright stars (including Orion) form a huge ring in the sky. It's a real structure, origin unknown.
    A cluster of thoughts: Why is there a giant ring of young stars surrounding us?
    http://aclusterofthoughts.blogspot.cz/2015/08/why-is-there-giant-ring-of-young-stars.html

    VIRGO
    VIRGO --- ---
    V pondělí před půl osmou večer: SpaxeX znovu a lépe!
    SpaceX set to launch again Monday
    http://phys.org/news/2017-01-spacex-monday.html
    Kliknutím sem můžete změnit nastavení reklam