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Cosmos In Brief - Aktualní novinky vesmírného výzkumu v kostce
VIRGO
Máte k tomu co říct? Vložte se do diskuze.
VIRGO --- 19:37:17 27.7.2017
Half of the Milky Way comes from other galaxies | Science News
https://www.sciencenews.org/article/half-milky-way-comes-other-galaxies

Simulations suggest that galactic winds blew the material in from elsewhere

New simulations suggest that nearly half the matter in the Milky Way may have been siphoned from the gas of other galaxies.
That gas provides the raw material that galaxies use to build their bulk. The finding, scheduled to appear in the Monthly
Notices of the Royal Astronomical Society, reveals a new, unexpected way for galaxies to acquire matter and could give
clues to how they evolve.

Galaxies trade gas | Science News
https://www.youtube.com/watch?v=Opq0YATsKX8
VIRGO --- 19:01:10 27.7.2017
Příběh tří hvězdných měst | ESO Česko
http://www.eso.org/public/czechrepublic/news/eso1723/?lang

Díky novým pozorováním, která pořídil dalekohled VST, se astronomům podařilo odhalit tři různé populace mladých stálic tvořících hvězdokupu
v nitru Velké mlhoviny v souhvězdí Orion. Nečekaný výsledek přináší nový pohled na chápání procesu vzniku hvězdokup. Naznačuje totiž, že ke
vzniku hvězd mohlo docházet v explozivních etapách, přičemž každá epizoda se odehrála mnohem rychleji, než se dříve myslelo.

Širokoúhlá kamera OmegaCAM pracující na dalekohledu ESO/VST (VLT Survey Telescope) pořídila nové detailní a působivé záběry Velké mlhoviny
v Orionu (Orion Nebula) a s ní spojené hvězdokupy mladých hvězd. Tato mlhovina je jednou z nejbližších oblastí s probíhajícím vznikem malých
i velkých hvězd a nachází se ve vzdálenosti asi 1 350 světelných let od Země.

Zooming in on the Orion Nebula | ESO Česko
http://www.eso.org/public/czechrepublic/videos/eso1723b/

Zooming in on the Orion Nebula
https://www.youtube.com/watch?v=Rkg5RXxlxuk
VIRGO --- 18:59:38 27.7.2017
Has Cassini found a universal driver for prebiotic chemistry at Titan? / Cassini-Huygens / Space Science / Our Activities / ESA
http://www.esa.int/...-Huygens/Has_Cassini_found_a_universal_driver_for_prebiotic_chemistry_at_Titan

The international Cassini-Huygens mission has made a surprising detection of a molecule that is
instrumental in the production of complex organics within the hazy atmosphere of Saturn’s moon Titan.

Titan boasts a thick nitrogen and methane atmosphere with some of the most complex chemistry seen in the Solar System.
It is even thought to mimic the atmosphere of early Earth, before the build-up of oxygen. As such, Titan can be seen
as a planet-scale laboratory that can be studied to understand the chemical reactions that may have led to life on Earth,
and that could be occurring on planets around other stars.

In Titan’s upper atmosphere, nitrogen and methane are exposed to energy from sunlight and energetic particles in Saturn’s
magnetosphere. These energy sources drive reactions involving nitrogen, hydrogen and carbon, which lead to more complicated
prebiotic compounds.

[http://www.esa.int/var/esa/storage/images/esa_multimedia/images/2017/07/chemistry_in_titan_s_atmosphere/17086684-1-eng-GB/Chemistry_in_Titan_s_atmosphere_node_full_image_2.jpg]
VIRGO --- 18:58:08 27.7.2017
Using powerful Dark Energy Camera, scientists reach the cosmic dawn | EurekAlert! Science News
https://www.eurekalert.org/pub_releases/2017-07/asu-upd072617.php

Arizona State University astronomers Sangeeta Malhotra and James Rhoads, working with international teams in Chile and China,
have discovered 23 young galaxies, seen as they were 800 million years after the Big Bang. The results from this sample have
been recently published in the Astrophysical Journal.

[https://media.eurekalert.org/multimedia_prod/pub/web/146472_web.jpg]
VIRGO --- 18:46:44 27.7.2017
Giant Radio Telescope Scaled Back to Contain Costs - Scientific American
https://www.scientificamerican.com/article/giant-radio-telescope-scaled-back-to-contain-costs/

Crowding antennas closer together may affect the Square Kilometer Array's ability to observe the early Universe

Designs for the world’s largest radio telescope have been scaled back to save money—a decision that astronomers
say could affect its ability to peer deep into the Universe’s past.

The Square Kilometre Array (SKA), a telescope 50 times more sensitive than current instruments, is expected to cost
billions of dollars. Its final design calls for around 2,000 radio dishes in Africa, together with up to one million
antennas in Australia, that will have a total light-collecting area of roughly 1 square kilometre—hence the project's
name.

[https://www.scientificamerican.com/sciam/assets/Image/SKA1_AU_closeup_midres_screen.jpg]
VIRGO --- 18:45:10 27.7.2017
Galactic David and Goliath | ESA/Hubble
http://www.spacetelescope.org/news/heic1712/

The gravitational dance between two galaxies in our local neighbourhood has led to intriguing visual features in both as witnessed in this new
NASA/ESA Hubble Space Telescope image. The tiny NGC 1510 and its colossal neighbour NGC 1512 are at the beginning of a lengthy merger, a crucial
process in galaxy evolution. Despite its diminutive size, NGC 1510 has had a significant effect on NGC 1512’s structure and amount of star formation.

[https://cdn.spacetelescope.org/archives/images/screen/heic1712a.jpg]
VIRGO --- 18:43:23 27.7.2017
The Making of a Pre-Planetary Nebula
http://aasnova.org/2017/07/26/the-making-of-a-pre-planetary-nebula/

The gas expelled by dying stars gets twisted into intricate shapes and patterns as
nebulae form. Now a team of researchers might have some answers about how this happens.

[http://aasnova.org/wp-content/uploads/2017/07/fig3-8.jpg]
VIRGO --- 2:37:03 27.7.2017
Čerstvý DAH s úžasným hostem!!
Can we really travel to other stars? Can Breakthrough Starshot meet its goals?

Breakthrough Starshot aims to demonstrate proof of concept for ultra-fast light-driven nano-crafts, and lay the foundations
for a first launch to Alpha Centauri within the next generation. Along the way, the project could generate important supplementary
benefits to astronomy, including solar system exploration and detection of Earth-crossing asteroids.

Join us this week with Dr. Avi Loeb the Chairman of the Breakthrough Starshot Advisory Committee as we discover the new projects
and initiatives that are paving the way to travel to the nearest exoplanetary systems.

From the First Star to Milkomeda Kindle Edition - https://www.amazon.com/dp/B014GCTXF0

Breakthrough Starshot Updates w/ Avi Loeb
https://www.youtube.com/watch?v=Aja7eH3faOE


[https://images-na.ssl-images-amazon.com/images/I/51ApX36bAhL.jpg]
VIRGO --- 21:39:10 26.7.2017
Apollo Asteroid 2017 BS5 just missed the Earth safely at 19:19 UTC at 3.1 times the distance to the
Moon, at a speed (relative to the Earth) of 5.8 km/s. It is estimated to be 28 - 90 meters in size.

http://minorplanetcenter.net/db_search/show_object?object_id=2017%20BS5

https://www.youtube.com/watch?v=mEp0ON2XcJ4
XCHAOS --- 21:10:59 26.7.2017
VIRGO: a tady praktický nápad, jak s tím komunikovat:
SailBeam: A Conversation with Jordin Kare
https://www.centauri-dreams.org/?p=38164