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Cosmos In Brief - Aktualní novinky vesmírného výzkumu v kostce
For every complex question, there's a simple answer that's completely wrong.
Máte k tomu co říct?
Vložte se do diskuze
sice už starší, ale parádní
Cosmography of the Local Universe
Cosmic rays tune ATLAS for a particle symphony | CERN
At the ATLAS experiment at CERN, physicists and engineers are testing their subdetector systems –
using particles from outer space.
During its last 3-year run, the Large Hadron Collider (LHC) achieved its highest-energy collisions
at 8 TeV. But when the LHC starts up again in 2015 it will hit 13 TeV, which means new challenges
for the large detectors ATLAS, CMS, ALICE and LHCb. Subdetectors on the ATLAS experiment will have
to be thoroughly tested for performance at high-energy. But how do you test a general-purpose par-
ticle physics detector for high-energy collisions when there are no particle collisions taking place?
"Cosmic rays," says ATLAS run coordinator Alessandro Polini.
Letters: MOST: Molonglo Observatory Synthesis Telescope - Molonglo High Plains
MOST is one of the largest Australian telescopes. It is situated in the Molonglo High Plains near Hoskinstown.
It consists of two cylindrical paraboloids – built onto two arms each about a mile long – one running North-South
and the other East-West.
Nearby Super-Earth is Best Habitable Candidate So Far, Astronomers Say
On a clear night, you might be able to spot the red dwarf star Gliese 832 through a backyard telescope, as it is just 16 light years away.
Today, astronomers announced the discovery of super-Earth planet orbiting this nearby star and say it might be the best candidate yet for
habitable world. Gliese 832c was spotted by an international team of astronomers, led by Robert A. Wittenmyer from UNSW Australia. They
used high-precision radial-velocity data from HARPS-TERRA, the Planet Finder Spectrograph and the UCLES echelle spectrograph. This star
is already known to have one additional planet, a cold Jupiter-like planet, Gliese 832 b, discovered in 2009.
Pluto & Charon Eclipse a Triple Star
Credit: NACO Team, 8.2-meter VLT (Yepun), ESO
Explanation: Occasionally, a planet in our Solar System will pass in front of a bright star.
Since stars and planets take up so little space on the sky, such events are quite rare. Two
months ago, however, Pluto and its large moon Charon passed in front of a comparatively bright
triple star system known as P126. By noting how P126 A dimmed, the event was useful for studying
Pluto's relatively unknown atmosphere. A Very Large Telescope in Chile using a deformable mirror
to counter the blurring effect of Earth's atmosphere captured the above image.
Dwarf planet could illuminate the dark sector - physicsworld.com
A dwarf-planet candidate called UX25 and its tiny satellite could provide the first evidence of a new cosmological model
that includes antigravity, say Alberto Vecchiato and Mario Gai of the Astrophysical Observatory of Turin in Italy. The model
dispenses with concepts such as dark matter, dark energy and cosmic inflation, and the astronomers say that it could be
tested by observing the motion of the two objects as they move through the outer solar system.
Athena to study the hot and energetic Universe / Space Science / Our Activities / ESA
ESA has selected the Athena advanced telescope for high-energy astrophysics as its second ‘Large-class’ science mission.
The observatory will study the hot and energetic Universe and takes the ‘L2’ slot in ESA’s Cosmic Vision 2015–25 plan,
with a launch foreseen in 2028.
GIGANTIC SPRITES OVER THE USA: With the arrival of summer, thunderstorm activity is underway across the USA.
We all know what comes out of the bottom of thunderstorms: lightning. Lesser known is what comes out of the top:
sprites. "Lately there has been a bumper crop of sprites," reports Thomas Ashcraft, a longtime observer of the
phenomenon. "Here is one of the largest' 'jellyfish' sprites I have captured in the last four years." The cluster
shot up from western Oklahoma on June 23, so large that it was visible from Ashcraft's observatory in New Mexico
289 miles away:
'Cosmic own goal' another clue in hunt for dark matter
The hunt for dark matter has taken another step forward thanks to new supercomputer
simulations showing the evolution of our "local Universe" from the Big Bang to the present day.
Physicists at Durham University, UK, who are leading the research, say their simulations could improve
understanding of dark matter, a mysterious substance believed to make up 85 per cent of the mass of the Universe.
Professor Carlos Frenk, Director of Durham University's Institute for Computational Cosmology, said: "I've been
losing sleep over this for the last 30 years.
Has the Cosmology Standard Model become a Rube Goldberg Device?
This week at the Royal Astronomical Society’s National Astronomy Meeting in the UK, physicists are challenging the evidence
for the recent BICEP2 results regarding the inflation period of the Universe, announced just 90 days ago. New research is
laying doubt upon the inclusion of inflation theory in the Standard Cosmological Model for understanding the forces of
nature, the nature of elementary particles and the present state of the known Universe.