Earth as hybrid planet: New classification places Anthropocene era in astrobiological context
https://phys.org/news/2017-09-earth-hybrid-planet-classification-anthropocene.html

For decades, as astronomers have imagined advanced extraterrestrial civilizations, they categorized such worlds by the amount of energy their
inhabitants might conceivably be able to harness and use. They sorted the hypothetical worlds into three types according to a scheme named in
1964 for Soviet astronomer Nikolai Kardashev.

Now, a team of researchers including Marina Alberti of the University of Washington has devised a new classification scheme for the evolutionary
stages of worlds based on "non-equilibrium thermodynamics"—a planet's energy flow being out of synch, as the presence of life could cause.

The categories range from imagined planets with no atmosphere whatsoever to those with an "agency-dominated biosphere" or even a "technosphere,"
reflecting the achievements of a vastly advanced, "energy-intensive technological species."

Their paper, "Earth as a Hybrid Planet: The Anthropocene in an Evolutionary Astrobiological Context," was published Sept. 6 in the journal
Anthropocene. Lead author is Adam Frank, professor of physics and astronomy at the University of Rochester. Alberti is a professor of urban
design and planning in the UW College of Built Environments, and director of the college's Urban Ecology Research Lab.

ALMA Finds Hints of Early Black-Hole Growth
http://aasnova.org/2017/09/06/alma-finds-hints-of-early-black-hole-growth/

How did the first supermassive black holes grow alongside their host galaxies in the early universe? New observations from the Atacama
Millimeter / Submillimeter Array (ALMA) have provided us with a detailed look at one quasar, which may help us to answer this question.

Pluto Features Given First Official Names | Press Releases | IAU
https://www.iau.org/news/pressreleases/detail/iau1704/

The Working Group for Planetary System Nomenclature (WGPSN) of the International Astronomical Union (IAU) has officially approved the naming of fourteen features
on the surface of Pluto. These are the first geological features on the planet to be named following the close flyby by the New Horizons spacecraft in July 2015.

Dnešní rozhovor s panem Druckmüllerem.

Česká expedice za zatměním Slunce v USA (zač. 20:30)
Studio ČT24 — Česká televize
http://www.ceskatelevize.cz/porady/10101491767-studio-ct24/217411058060907/

Jeden z prvních (rychlých) publik. výsledků Petra Horálka
All Around The Eclipsed Sun
http://spaceweathergallery.com/indiv_upload.php?upload_id=138729

Chandra :: Photo Album :: GJ 176 :: September 6, 2017
http://chandra.harvard.edu/photo/2017/gj176/

A new study using data from NASA's Chandra X-ray Observatory and ESA's XMM-Newton suggests X-rays emitted by a planet's host star
may provide critical clues to just how hospitable a star system could be. A team of researchers looked at 24 stars similar to the Sun,
each at least one billion years old, and how their X-ray brightness changed over time.

Since stellar X-rays mirror magnetic activity, X-ray observations can tell astronomers about the high-energy environment around the star.
In the new study the X-ray data from Chandra and XMM-Newton revealed that stars like the Sun and their less massive cousins calm down
surprisingly quickly after a turbulent youth.

Apprendre et oublier pendant son sommeil : deux processus étroitement liés ? - Communiqués et dossiers de presse - CNRS
http://www2.cnrs.fr/en/2969.htm

The Rosetta space probe discovered a large amount of organic material in the nucleus of comet “Chury.” In an article published by MNRAS on August 31,
2017, two French researchers advance the theory that this matter has its origin in interstellar space and predates the birth of the Solar System.

New Horizons Files Flight Plan for 2019 Flyby
https://www.nasa.gov/feature/new-horizons-files-flight-plan-for-2019-flyby

NASA’s New Horizons mission has set the distance for its New Year’s Day 2019 flyby of Kuiper Belt object 2014 MU69,
aiming to come three times closer to MU69 than it famously flew past Pluto in 2015.

That milestone will mark the farthest planetary encounter in history – some one billion miles (1.5 billion kilometers)
beyond Pluto and more than four billion miles (6.5 billion kilometers) from Earth. If all goes as planned, New Horizons
will come to within just 2,175 miles (3,500 kilometers) of MU69 at closest approach, peering down on it from celestial
north. The alternate plan, to be employed in certain contingency situations such as the discovery of debris near MU69,
would take New Horizons within 6,000 miles (10,000 kilometers)— still closer than the 7,800-mile (12,500-kilometer)
flyby distance to Pluto.

Accretion-powered pulsar reveals unique timing glitch
http://www.ras.org.uk/news-and-press/3041-accretion-powered-pulsar-reveals-unique-timing-glitch

A group of scientists from the Middle East Technical University and Başkent University in Turkey have discovered a sudden change in
the rotation speed of the peculiar pulsar SXP 1062. These jumps in frequency, known as ‘glitches’, are commonly seen in isolated pulsars,
but have so far never been observed in binary pulsars (pulsars orbiting with a companion white dwarf or neutron star) such as SXP 1062.

SXP 1062 is located in the Small Magellanic Cloud, a satellite galaxy of our own Milky Way galaxy, and one of our nearest intergalactic
neighbours at 200,000 light years away. Lead author of the study, Mr M. Miraç Serim, a senior PhD student working under the supervision
of Prof Altan Baykal, said, “This pulsar is particularly interesting, since as well as orbiting its partner star as part of a binary pair,
it is also still surrounded by the remnants of the supernova explosion which created it.”

Study of Uranus suggests some of its moons are on a collision course
https://phys.org/news/2017-09-uranus-moons-collision.html

A trio of researchers, two with the University of Idaho, the other with Wellesley College,
has found evidence suggesting that two pairs of Uranus's moons are on a collision course.
Robert Chancia, Matthew Hedman and Richard French have uploaded a paper describing their
observations to the arXiv preprint server.

NASA Chandra Telescope: Deep Field South - A Treasure Trove Of Black Holes
https://www.youtube.com/watch?v=OGlaQyLFYzM

Fast Radio Burst 121102 Update For 09/02/17
https://www.youtube.com/watch?v=h_EJYM4utEM


[1706.06582] A Fast Radio Burst Occurs Every Second throughout the Observable Universe
https://arxiv.org/abs/1706.06582

Could TRAPPIST-1’s seven Earth-like planets have gas giant siblings? | Carnegie Institution for Science
https://carnegiescience.edu/node/2230

New work from a team of Carnegie scientists (and one Carnegie alumnus) asked whether any gas giant planets could potentially orbit
TRAPPIST-1 at distances greater than that of the star’s seven known planets. If gas giant planets are found in this system’s outer
edges, it could help scientists understand how our own Solar System’s gas giants like Jupiter and Saturn formed.

Earlier this year, NASA’s Spitzer Space Telescope thrilled the world as it revealed that TRAPPIST-1, an ultra-cool dwarf star in
the Aquarius constellation, was the first-known system of seven Earth-sized planets orbiting a single star. Three of these planets
are in the so-called habitable zone—the distance from the central star at which liquid water is most likely to be found.

But it’s possible that like our own Solar System, TRAPPIST-1 is also orbited by gas giant planets at a much-greater distance than
the Earth-sized planets that we already know are part of the system.