• úvod
  • témata
  • události
  • tržiště
  • diskuze
  • nástěnka
    • přihlásit
    registrace
    ztracené heslo?
    VIRGOCosmos In Brief - Aktualní novinky vesmírného výzkumu v kostce
    VIRGO
    VIRGO --- ---
    Fermi Sees Gamma Rays from Far Side Solar Flares
    https://www.nasa.gov/feature/goddard/2017/nasas-fermi-sees-gamma-rays-from-hidden-solar-flares

    An international science team says NASA's Fermi Gamma-ray Space Telescope has observed high-energy light from solar eruptions located
    on the far side of the sun, which should block direct light from these events. This apparent paradox is providing solar scientists with
    a unique tool for exploring how charged particles are accelerated to nearly the speed of light and move across the sun during solar flares.

    Fermi Sees Gamma Rays from Far Side Solar Flares
    https://www.youtube.com/watch?v=BdTTSylIHYQ
    VIRGO
    VIRGO --- ---
    NASA's Fermi Discovers the Most Extreme Blazars Yet
    https://www.nasa.gov/feature/goddard/2017/nasas-fermi-discovers-the-most-extreme-blazars-yet

    NASA's Fermi Gamma-ray Space Telescope has identified the farthest gamma-ray blazars, a type of galaxy whose intense emissions
    are powered by supersized black holes. Light from the most distant object began its journey to us when the universe was 1.4
    billion years old, or nearly 10 percent of its present age.

    NASAs Fermi Finds the Farthest Blazars
    https://www.youtube.com/watch?v=mU3AV7BN1nM
    VIRGO
    VIRGO --- ---
    Mastcam Sol 1592 (08/01/17)

    VIRGO
    VIRGO --- ---
    Stellar Planet: The HST 'bacon' program: PanCET
    http://www.stellarplanet.co.uk/2017/01/PanCET.html

    PanCET is the largest exoplanet observation program ever to be run with the Hubble Space Telescope. Now, PanCET stands for the Panchromatic Comparative Exoplanet Treasury
    and is a program which consists of 498 HST orbits (that is 32 solid days of Hubble time), and over twice the size of any Hubble exoplanet program that has come before it.
    The aim of the program is to measure the atmospheres of 20 exoplanets, over 3 instruments, in 6 different modes, as they are eclipsed by or transit their stars.

    VIRGO
    VIRGO --- ---
    Selfie měsíce: Franck Marchis před zrcadlem Keckova desetimetru.

    VIRGO
    VIRGO --- ---
    The Year of the Rooster, from a Thai perspective - Asian and African studies blog
    http://blogs.bl.uk/asian-and-african/2017/01/the-year-of-the-rooster-from-a-thai-perspective.html

    VIRGO
    VIRGO --- ---
    Astronomers detect hydrogen corona of Jupiter's moon Europa
    https://phys.org/news/2017-01-astronomers-hydrogen-corona-jupiter-moon.html

    Using the Hubble Space Telescope (HST), astronomers have spotted an atomic hydrogen corona around Jupiter's icy moon Europa.
    The discovery which could improve our understanding of Europa's tenuous atmosphere was published Jan. 13 in the Astronomical Journal.
    VIRGO
    VIRGO --- ---
    New cameras put Tucson sky hunters on top again | College | tucson.com
    http://tucson.com/...cson-sky-hunters-on-top-again/article_6e8a28aa-e21b-5697-99d0-30abcb1b6152.html

    Asteroid hunters with the Catalina Sky Survey were very excited on a recent Saturday when they discovered an orbiting object that would whiz by Earth two days later.
    The discovery generated headlines about a “surprise” asteroid coming very close to Earth at half the distance to the moon, but that was not the exciting part for
    observers at the sky survey. The asteroid itself “was a fairly ordinary object making a fairly ordinary close approach,” said Eric Christensen, principal investigator
    for the survey, which is run by the University of Arizona’s Lunar and Planetary Laboratory. But it was the first asteroid discovered by a custom-made camera on the
    survey’s 0.9-meter Schmidt telescope near Mount Bigelow in the Santa Catalina Mountains.

    VIRGO
    VIRGO --- ---
    Kepler & K2 Science Conference IV - Kepler & K2 Science Center
    https://keplerscience.arc.nasa.gov/scicon4/

    VIRGO
    VIRGO --- ---
    Space in Videos - 2017 - 01 - ESA Euronews: Hunting Earth-like exoplanets
    http://www.esa.int/spaceinvideos/Videos/2017/01/ESA_Euronews_Hunting_Earth-like_exoplanets

    In this edition of Space, Euronews correspondent Jeremy Wilks reports from the Observatory
    of Geneva - home to experts in exoplanets, the name given to planets outside our solar system.

    So far they have managed to find more than 3500 exoplanets but they believe there could be
    literally billions of them across the Milky Way.
    VIRGO
    VIRGO --- ---
    +3
    How Many Planets in the Universe? | Part 1: Our Galaxy
    https://www.youtube.com/watch?v=QQbp91m16Fw


    ---

    The PHL's Habitable Universe web page provides estimates on the number of habitable worlds in the universe. Here we use the latest data and models
    to estimate the number of potentially habitable exoplanets, those Earth-size planets orbiting within the habitable zone of stars, starting from the
    nearby stars, our home galaxy, to the whole observable universe. All estimates show both conservative and optimistic values, which are based on
    corresponding definitions of the habitable zone. So far, only up to 30 potentially habitable exoplanets have been identified, none yet Earth-like.
    This page is only updated as new information is available.

    The Habitable Universe - Planetary Habitability Laboratory @ UPR Arecibo
    http://phl.upr.edu/projects/habuniverse

    ---

    Tales from the Exoplanet Archive: How NASA Keeps Track of Alien Worlds
    http://www.space.com/35470-exoplanet-archive-tracks-alien-worlds.html

    The Milky Way is littered with a vast diversity of planets: giants that blur the line between planet and failed-star brown dwarf; tiny worlds similar in size to Earth's
    moon; planets that take 100,000 years to orbit their suns or whip around in hours; lava worlds; ice worlds; and planets that circle multiple suns or whirling pulsars.

    Scientists find them by watching stars that wobble, change gravity, vary in color or dip slightly in brightness. (This last strategy is employed by the most prolific
    planet hunter of all time, NASA's Kepler space telescope.) And someone needs to keep track of them all. Rachel Akeson, deputy director at the NASA Exoplanet Science
    Institute, leads the space agency's Exoplanet Archive, which is tasked with cataloging the ever-growing
    horde of planets known to exist outside the solar system.

    VIRGO
    VIRGO --- ---
    Weekly Space Hangout - Jan 27, 2017: Kimberly Cartier & Exoplanet WASP 103b
    https://www.youtube.com/watch?v=j_3_BJ0uAzc
    VIRGO
    VIRGO --- ---
    Asteroid 2017 BH 30 (průměr ~ 7-10 m) proletí v pondělí ráno kolem 04:51 UT asi 40 000 km od Země (0.17 LD)
    Nejbližší průlet kolem Měsíce (~ 280 000 km) v pondělí +/- 09:21 UT



    Objeven dnes díky prohlídce Catalina Sky Survey 29/01/17).
    IAU Minor Planet Center
    http://www.minorplanetcenter.net/db_search/show_object?object_id=2017+BH30

    VIRGO
    VIRGO --- ---
    Water Underground | How did our planet get its water?
    http://blogs.egu.eu/network/water-underground/2017/01/26/how-did-our-planet-get-its-water/

    Planet Earth makes its own water from scratch deep in the mantle | New Scientist
    https://www.newscientist.com/...75-planet-earth-makes-its-own-water-from-scratch-deep-in-the-mantle/
    VIRGO
    VIRGO --- ---
    Latest SETI Talks - Exocomets: Now you see them, now you don't - Barry Welsh, UC Berkeley
    Exocomets: Now you see them, now you don't - Barry Welsh(SETI Talks 2017)
    https://www.youtube.com/watch?v=FsCRNq0lGts


    Present technology does not enable us to view images of these kilometer-sized infalling bodies, but the evaporation of gaseous products
    liberated from exocomets that occurs close to a star can potentially cause small disruptions in the ambient circumstellar disk plasma.
    For circumstellar disks that are viewed “edge-on” this evaporating material may be directly observed through transient (night-to-night
    and hour-to-hour) gas absorption features seen at rapidly changing velocities. Using high resolution spectrographs mounted to large
    aperture ground-based telescopes, we have discovered 15 young stars that harbor swarms of exocomets. In this lecture we briefly describe
    the physical attributes of comets in our own solar system and the instrumental observing techniques to detect the presence of evaporating
    exocomets present around stars with ages in the 10 – 100 Myr range. We note that this work has particular relevance to the dramatic
    fluctuations in the flux recorded towards “Tabby’s star” by the NASA Kepler Mission, that may be explained through the piling up of
    swarms of exocomets in front of the central star.
    OMNIHASH
    OMNIHASH --- ---
    VIRGO: škoda, že je to superzemě s minimální dobou oběhu a pravděpodobně s vázanou rotací na slunce.
    VIRGO
    VIRGO --- ---
    +6
    Tohle světlo a barvy snad uvidíme příští rok na Velké výpravě... :)



    VIRGO
    VIRGO --- ---
    +4
    Does anyone know the context of this picture?...



    :)))
    VIRGO
    VIRGO --- ---
    https://www.newscientist.com/round-up/ligodetection/

    To celebrate the one-year anniversary of a discovery that changed the face of astronomy,
    on 7 February we feature the exclusive world premiere of a new documentary.

    LIGO Detection trailer
    https://www.youtube.com/watch?v=1xX4x3WyXRo
    VIRGO
    VIRGO --- ---
    +2
    VIRGO: A ještě jedno video s komentářem, protože téma si to zaslouží.
    It's Faster! Flickering Quasars Used To Measure Universe Expansion
    https://www.youtube.com/watch?v=ql5I48S29gA
    Kliknutím sem můžete změnit nastavení reklam