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    VIRGOCosmos In Brief - Aktualní novinky vesmírného výzkumu v kostce
    VIRGO
    VIRGO --- ---
    Large aeolian ripples on Mars | Planetary Geomorphology Image of the Month
    https://planetarygeomorphology.wordpress.com/2016/07/30/dune-ripples-on-earth-and-mars/
    Ripples cover the surfaces of sand dunes on Earth and Mars. On Earth, ripples formed in typical aeolian sand (e.g., 0.1 and 0.3 mm)
    range in wavelength between 10 and 15 cm and display a highly straight, two-dimensional crestline geometry. Ripples are thought to
    develop through a process dominated by the ballistic impacts of saltating sand grains in which wavelength selection occurs through
    the interplay of grain size, wind speed, the saltation trajectories of the sand grains, and ripple topography.

    VIRGO
    VIRGO --- ---
    Rocks in Chile Help Scientists Hunt for Life on Mars - Eos
    https://eos.org/research-spotlights/rocks-in-chile-help-scientists-hunt-for-life-on-mars
    Robots like Viking, Phoenix, and Curiosity have found indirect evidence of oxalate minerals on Mars. New techniques
    tested in the Chile’s Atacama Desert could help future Mars rovers analyze these minerals for possible by-products of life.

    Organic oxalates tie up carbon, creating carbon sinks that are extremely resistant to most physical and chemical weathering.
    On Earth, oxalates are primarily broken down by biological weathering; fungus and bacteria consume oxalate, recycling carbon
    back into the environment. But Mars’s carbon cycle is not as well understood. Developing better techniques to identify trace
    concentrations of oxalates may provide insights into the processes at play on the Red Planet.

    VIRGO
    VIRGO --- ---
    NEBULA: No ahój! To je prima tě tu vidět. :)

    No jasně - špička Perseid se blíží, takže Murphyho zákony zase pracují s přesností švýcarek.
    Dnes se zatáhlo, navíc předpovědi nic moc, a to ještě o víkendu vypadaly tak dobře!
    Když jsem sem dnes házel ten návod na pozorování, hodně škodolibě jsem se pochechtával...
    Už z toho letos začíná být tradice - při rojích je zkrátka hnusně. Už si to koleduje o pranostiku.
    Třeba: "Na svatého Perseida - na obloze zmar a bída". (na "Persea" jsem nenašel rým...:D)
    NEBULA
    NEBULA --- ---
    VIRGO: hmm :) tak to mám foto teda pěkně mimo :D
    VIRGO: nádhernej snímek!
    NEBULA
    NEBULA --- ---
    No dobrý večer miláčkové, byla jsem nějakou dobu mimo signál a připojení, takže to chvíli potrvá než se zorientuju, nicméně nesu sem zprávu, že Perseidy lítaj :) včera teda totálka jasno, nádhera krása, čekala jsem až proletí a proletěl jeden nádhernej snad přes celý nebe :) asi tak přesně o půlnoci, a jasnost vzestupná, pak sestupná a zas vzestupná, zajímavé, uchvacující, no snad se nám to dnes vyprší a zítra bude zas viditelnost... :)
    DARKMOOR
    DARKMOOR --- ---
    VIRGO: Pořád doufám, že pro změnu bude oblačnost mizivá :)
    VIRGO
    VIRGO --- ---
    Ano, takhle to nejčastěji chodí... :-))

    VIRGO
    VIRGO --- ---
    [1608.02013v1] The Thirteenth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the SDSS-IV Survey MApping Nearby Galaxies at Apache Point Observatory
    http://arxiv.org/abs/1608.02013v1

    VIRGO
    VIRGO --- ---
    Dark Energy Spectroscopic Instrument to Measure Light from 35M Cosmic Objects in Effort to Understand Expansion of the Universe
    DOE Approves Construction of 3-D Galaxy-mapping Project ‘DESI’ | SLAC National Accelerator Laboratory
    https://www6.slac.stanford.edu/...-09-doe-approves-construction-3-d-galaxy-mapping-project-desi.aspx
    A 3-D sky-mapping project that will measure the light of 35 million cosmic objects has received formal approval from the Department of Energy
    to move forward with construction. Installation of the project, called Dark Energy Spectroscopic Instrument (DESI), is set to begin next year
    at the Mayall 4-meter telescope at Kitt Peak National Observatory near Tucson, Arizona, with observations starting up in January 2019.

    VIRGO
    VIRGO --- ---
    Looking down on the prime focus & primary mirror of the 200" Hale Telescope.

    VIRGO
    VIRGO --- ---
    Tabby's star, alien megastructures, and Dyson spheres: This mysterious planet refuses to reveal its secrets — Quartz
    http://qz.com/...alien-hunters-are-fixated-on-a-mysterious-star-which-refuses-to-reveal-its-secrets/
    A flurry of studies published over the past year show that the more data scientists collect, the stranger the star’s tale becomes.
    Every attempt to rule out the alien-megastructure hypothesis is met with more data that stops it from being discarded.

    VIRGO
    VIRGO --- ---
    Ultimate Gravitational Waves Demo
    https://www.youtube.com/watch?v=dw7U3BYMs4U
    VIRGO
    VIRGO --- ---
    Asteroid Update - Jill Tarter from SETI Institute - August 2016
    https://www.youtube.com/watch?v=5QKBg9qLCco


    http://asteroidday.org/update/
    VIRGO
    VIRGO --- ---
    Comet Swift-Tuttle: The Icy Parent of the Perseid Meteor Shower
    http://www.space.com/33677-comet-swift-tuttle-perseid-meteor-shower-source.html
    The spectacular Perseid meteor shower, peaking Thursday night (Aug. 11–12), lights up Earth's sky every summer as
    Earth passes through the trail left by Comet Swift-Tuttle, a miles-wide behemoth that swings by Earth every 133 years.

    Swift-Tuttle, whose nucleus is 16 miles (26 kilometers) wide, is the largest solar system object to pass close to Earth
    repeatedly, NASA has said, and researchers once thought it was likely to hit Earth in 2126 — but the last time it passed
    Earth, in 1992, astronomers took more precise measurements and calculated that its next pass wouldn't be so dangerous
    after all.

    VIRGO
    VIRGO --- ---
    The Kepler K2 Campaign 10 has suffered a couple of unexpected reductions to the intended science.
    Break in science collection during K2 Campaign 10 - Kepler & K2
    http://keplerscience.arc.nasa.gov/break-in-science-collection-during-k2-campaign-10.html
    VIRGO
    VIRGO --- ---
    The Wow! Signal Podcast: 3 Episode 8 - Ben Montet Makes a Star Weirder
    http://www.wowsignalpodcast.com/2016/08/3-episode-8-ben-montet-makes-star.html
    Host Paul Carr talks to astronomer Ben Montet,who has, with his colleague Joshua Simon,
    just published the result that Tabby's Star (KIC 8462852) dimmed considerably over the four
    year course of the Kepler Space Telescope prime mission.

    VIRGO
    VIRGO --- ---
    New Technique Searches for Exomoons by the Light of Their Planets
    http://www.space.com/33658-exomoons-illuminated-by-planetary-light-new-technique.html
    Bright, young planets that are still hot from their formation could shine some light on their moons,
    making the dim satellites easier for astronomers to spot using a newly developed technique.

    The new method suggests using the polarization of the light from the planet to find these small moons.
    Polarization light refers to light waves that are oriented in the same direction. For example, when
    sunlight reflects off the surface of the ocean, it tends to become polarized.

    VIRGO
    VIRGO --- ---
    KIC 8462852 Faded Throughout the Kepler Mission
    http://spaceref.com/news/viewsr.html?pid=49244
    VIRGO
    VIRGO --- ---
    Are we looking for Martian life in all the wrong places?
    http://newatlas.com/mars-life-meteor/44795/
    A new study suggests that we may be searching in the wrong place for signs of life on Mars,
    when we examine rocks excavated by meteor impacts for organic compounds. The research could
    allow space agencies to select landing sites for future missions that are more likely to
    yield samples containing the markers of ancient, or even present-day life.

    http://www.wired.com/2016/08/shouldnt-go-mars-might-decimate-martians
    Martians Might Be Real. That Makes Mars Exploration Way More Complicated

    Evidence of Martian life could be hard to find in some meteorite blast sites
    http://www3.imperial.ac.uk/newsandeventspggrp/imperialcollege/newssummary/news_8-8-2016-12-31-10
    Scientists suggest signs of life from under Mars' surface may not survive in rocks excavated by some meteorite impacts.

    VIRGO
    VIRGO --- ---
    Want to Find Aliens? Look for Planets That Have Become Stars
    http://gizmodo.com/want-to-find-aliens-look-for-planets-that-have-become-1784977276
    In a speculative paper soon to be published in the Journal of the British Interplanetary Society, physicist and astrobiologist Milan M. Ćirković
    from the Astronomical Observatory of Belgrade presents an entirely new way for SETI scientists to search for signs of advanced extraterrestrial
    civilizations. Inspired by the work of British physicist Martyn J. Fogg and his suggestion that we turn Jupiter into a kind of mini-star, Ćirković
    says we should start looking for “stellified” objects in other planetary systems as signs of alien astro-engineering.
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