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Δευτέρα 25 Ιανουαρίου 2016

NASA TV Media

      



NASA TV Media





Η μετάδοση ροής ξεκίνησε στις 29 Ιουν 2015
ANAΡΤΗΣΗ ΑΠΟ ΤΟ YOUTUBE 26/1/2016




A New Planet in our Solar System? NASA Takes a Look

                  

A New Planet in our Solar System? NASA Takes a Look

Δημοσιεύτηκε στις 21 Ιαν 2016

NASA’s
Director of Planetary Science, Jim Green, discusses the Jan. 20
Astronomical Journal science paper that points to the possibility of a
new “Planet 9” in our solar system beyond Pluto, examining the
scientific process and inviting you to have a front row seat to our
exploration of the solar system.
ANAΡΤΗΣΗ ΑΠΟ ΤΟ YOUTUBE 26/1/2016









Brief Candle in the Dark - with Richard Dawkins

                



Brief Candle in the Dark - with Richard Dawkins

Δημοσιεύτηκε στις 21 Ιαν 2016

Richard
Dawkins discusses the key individuals, institutions and ideas that have
inspired and motivated him since the publication of ‘The Selfish Gene’
in 1976.
Subscribe for regular science videos: http://bit.ly/RiSubscRibe

In
conversation with Professor Alice Roberts, Richard Dawkins describes
his life as a scientist that has taken him from the Panama Canal, to
encounters with the greatest scientific minds of the 20th Century. He
reflects on his efforts to popularise scientific ideas, through
bestselling books, fiery debates and presenting the 1991 CHRISTMAS
LECTURES.

Watch more science videos on the Ri Channel http://richannel.org
The Ri is on Twitter: http://twitter.com/ri_science
and Facebook: http://www.facebook.com/royalinstitution
and Tumblr: http://ri-science.tumblr.com/
Subscribe for the latest science videos: http://richannel.org/newsletter
ANAΡΤΗΣΗ ΑΠΟ ΤΟ YOUTUBE 26/1/2016




Q&A - Brief Candle in the Dark - with Richard Dawkins

                     



Q&A - Brief Candle in the Dark - with Richard Dawkins

Δημοσιεύτηκε στις 21 Ιαν 2016

Could
epigeneitc inheritance give rise to Lamarckian evolution? What's the
worst hate mail Dawkins has received? What's next for human evolution?
Richard Dawkins answers questions from the audience after his talk.
Watch the main conversation here: https://www.youtube.com/watch?v=jYqMW...

Subscribe for regular science videos: http://bit.ly/RiSubscRibe

In
conversation with Professor Alice Roberts, Richard Dawkins describes
his life as a scientist that has taken him from the Panama Canal, to
encounters with the greatest scientific minds of the 20th Century. He
reflects on his efforts to popularise scientific ideas, through
bestselling books, fiery debates and presenting the 1991 CHRISTMAS
LECTURES.

Watch more science videos on the Ri Channel http://richannel.org
The Ri is on Twitter: http://twitter.com/ri_science
and Facebook: http://www.facebook.com/royalinstitution
and Tumblr: http://ri-science.tumblr.com/
Subscribe for the latest science videos: http://richannel.org/newsletter
ANAΡΤΗΣΗ ΑΠΟ ΤΟ  ΥOUTUBE 26/1/2016






The Birth of the Atomic Bomb History Documentary

               



The Birth of the Atomic Bomb History Documentary

Δημοσιεύτηκε στις 21 Ιαν 2016

Human
Civilization was forevermore changed when scientists managed to release
the power of nuclear energy, the energy humankind had only before
witnessed from the stars. It is story of almost unimaginable leaps
forward in science and technology with consequences we are still in the
aftershocks of since the Second World War.

The scientific
achievements made in the first half of the 20th century were so great
that our modern world is merely the product of what happened in largely
wartime institutions. From fertilizer to semiconductor technologies.
Radar to rocketry.

Before, the Earth had in many ways been
before been a place contained, and somewhat innocent, in the realms of
the inward and the outward. After the war, everything changed.
Humanity's inner world was expanded by the powers of quantum mechanics
and atomic physics, whereas our outward world was greatly expanded by
relativity and advances in electromagnetism. Nowhere have these advances
been so violent and extreme than in the Manhattan Project, which was
truly a unique watershed moment for all peoples of the world.

The
Manhattan Project was a research and development program, led by the
United States with participation from the United Kingdom and Canada,
that produced the first atomic bomb during World War II. From 1942 to
1946, the project was under the direction of Major General Leslie Groves
of the US Army Corps of Engineers.

The Manhattan Project began
modestly in 1939, but grew to employ more than 130,000 people and cost
nearly US$2 billion (roughly equivalent to $25.8 billion as of 2012).
Over 90% of the cost was for building factories and producing the
fissionable materials, with less than 10% for development and production
of the weapons. The ultimate goal of the Manhattan Project was to
create a chain reaction on an atomic level and harness the released
energy to produce a viable weapon.

General Leslie Grove was
chosen to lead the project in 1942. Robert Oppenheimer was appointed to
lead the day-to-day running of the operation at the weapons laboratory
located at Los Alamos, NM. By 1945 the project had nearly 40
laboratories and factories spread throughout the country. The total cost
of the Manhattan Project was two billion dollars, which is the
approximate equivalent of twenty-six billion dollars today. Enrico Fermi
built a reactor in Chicago during the early 1940's.

Before
1943, work on the design and functioning of the bomb itself was largely
theoretical, based on fundamental experiments carried out at a number of
different locations. In that year a laboratory directed by J. Robert
Oppenheimer was created on an isolated mesa at Los Alamos, New Mexico,
34 miles (55 km) north of Santa Fe. This laboratory had to develop
methods of reducing the fissionable products of the production plants to
pure metal and fabricating the metal to required shapes. Methods of
rapidly bringing together amounts of fissionable material to achieve a
supercritical mass (and thus a nuclear explosion) had to be devised,
along with the actual construction of a deliverable weapon that would be
dropped from a plane and fused to detonate at the proper moment in the
air above the target. Most of these problems had to be solved before any
appreciable amount of fissionable material could be produced, so that
the first adequate amounts could be used at the fighting front with
minimum delay.

By the summer of 1945, amounts of plutonium-239
sufficient to produce a nuclear explosion had become available from the
Hanford Works, and weapon development and design were sufficiently far
advanced so that an actual field test of a nuclear explosive could be
scheduled. Such a test was no simple affair. Elaborate and complex
equipment had to be assembled so that a complete diagnosis of success or
failure could be had.

The result of all the nuclear reasearch
was the successful first detonation of an atomic bomb, code named
"Gadget," at Alamogordo, NM on July 16, 1945 at 5:29:45
Mountain War Time. It was detonated on top of a steel tower surrounded
by scientific equipment, with remote monitoring taking place in bunkers
occupied by scientists and a few dignitaries 10,000 yards (9 km) away.
The explosion came as an intense light flash, a sudden wave of heat, and
later a tremendous roar as the shock wave passed and echoed in the
valley. A ball of fire rose rapidly, followed by a mushroom cloud
extending to 40,000 feet (12,200 metres). The bomb generated an
explosive power equivalent to 15,000 to 20,000 tons of trinitrotoluene
(TNT); the tower was completely vaporized and the surrounding desert
surface fused to glass for a radius of 800 yards (730 metres). The
following month, two other atomic bombs produced by the project, the
first using uranium-235 and the second using plutonium, were dropped on
Hiroshima and Nagasaki, Japan. The world would never be the same again.
ANAΡΤΗΣΗ ΑΠΟ ΤΟ YOUTUBE 26/1/2016










What Can Quantum Computers Do?

                     



What Can Quantum Computers Do?

Δημοσιεύτηκε στις 19 Νοε 2013

Want to Learn More about Quantum Computers? Check out: http://muonray.blogspot.ie/2014/11/qu...

Lockheed
Martin, NASA and Google all have one thing in common: they all own
quantum computers. These quantum computers are superconducting chips
which were designed by D-wave systems and were fabricated at the NASA
Jet Propulsion Laboratories.

NASA and Google share a quantum
computer for use at the Quantum Artificial Intelligence Lab using a 512
qubit D-Wave Two that would be used for research into machine learning
to assist in using artificial neural networks to search through large
astronomical data sets for extrasolar planets and to increase the
efficiency of internet searchs by using A.I. metaheuristics on
heuristical search engines.

Such A.I. metaheuristics may resemble
global optimization problems similar to classical problems such as the
travelling salesman, ant colony or swarm optimization, which can
navigate through maze-like databases. Using entangled particles as
qubits, these algorithms can be navigated far faster than conventional
computers and with much more variables.

By using a decentralized,
quantum swarm AI, it may be possible to simulate emergent behavior
aswell, such as Langton's ant, which could see the rise of quantum-based
simulated intelligence which could go so far as to create realistic
cellular automatons on a computer.

The use of sophisticated
metaheuristics on lower heuristical functions may see computer
simulations which can select specific sub routines on computers by
themselves to solve problems in a truly intelligent way. In this way the
machines would be far more adaptable to changes in sensory data and
would be able to function with far more automation than would be
possible with normal computers.

Moreover, it may be possible to
use metaheuristics to perform error correction on software using neural
networks by comparing the optimized problem solving in a quantum
computer with the regular programming software of a regular computer.
Since regular computers are not quantum mechanical, they must be
programmed classically. However, by using quantum metaheuristics it may
be possible to perform optimization problems using Artificial
intelligence on a quantum computer and then compare to the command line
architecture in a piece of conventional software on a classical
computer, which may be too complex to modify or to check for errors
using human software engineers.

It may become routine that to
design large software, rather than use a team of engineers to design a
single piece of large software and to do multiple tests, revisions and
redistribution, quantum optimization problems will be run though a
machine instructed to do a particular task and the software will be
designed around such optimizations. Computer chips could even be
designed to be superconducting and quantum compatible in a factory or
laboratory and classically operating in conventional computer equipment.
In this way, optimization and programming could be done on the chips in
a factory or lab to search for any possible errors that could arise in
designing software. After which the chips would be used in conventional
computers for their particular tasks. Quantum computers may well find
their place in industry more than anywhere else, designing AI optimized
software around computer chips.
ANAΡΤΗΣΗ ΑΠΟ ΤΟ YOUTUBE 26/1/2016








High Temperature Volcanism on Earth - Michael Lesher (SETI Talks)

                     





High Temperature Volcanism on Earth - Michael Lesher (SETI Talks)

Δημοσιεύτηκε στις 22 Ιαν 2016

Komatiites
are magnesium-rich magmas characterized by very high temperature (up to
1640°C vs. ~1200°C for modern basalts), very low viscosity (0.1-1
Pa·s), and a very large interval (460-160°C) between liquidus and
solidus. As a consequence, they formed highly mobile flows capable of
flowing long distances over gentle slopes that - if channelized -
thermally and thermomechanically eroded wallrocks and substrates. This
led to the formation of some of the world’s richest
nickel-copper-platinum group element deposits. The most magnesian
examples formed only the Archean, marking a fundamentally different
thermal structure in the Earth’s mantle prior to 2.5 Ga.

Dr.
Lesher is a world renowned expert in komatiites and he will discuss how
they can help shine help a light on the Early Earth in the remote past.
ΑΝAΡΤΗΣΗ ΑΠΟ ΤΟ YOUTUBE 25/1/2016




Σάββατο 23 Ιανουαρίου 2016

SFN #149: WFIRST is GO!; Massive Early Galaxy Cluster Weighed; GRAVITY F...

                   

SFN #149: WFIRST is GO!; Massive Early Galaxy Cluster Weighed; GRAVITY F...

Δημοσιεύτηκε στις 15 Ιαν 2016

This
week, WFIRST is GO!, Astronomers identify and characterize the most
distant galaxy cluster found yet and a new black hole telescope see
first light.

Links for this week:
WFIRST:
http://www.space.com/31533-nasa-wfirs...
http://spacenews.com/nasas-next-major...

http://www.popularmechanics.com/space...

Most Distant Galaxy Cluster Found:
http://news.mit.edu/2016/most-distant...

GRAVITY’s First Light:
http://www.eso.org/public/news/eso1601/
http://www.eso.org/public/teles-instr...

Like SFN? Please consider becoming a Patreon Patron, if we get to $250 per month, I'll offer a free DeepAstronomy App!
https://patreon.com/SFN

Follow DeepAstronomy on Twitter:
@DeepAstronomy

Like DeepAstronomy on Facebook:
https://www.facebook.com/DeepAstronomy/

Like Space Fan News on Facebook:
https://www.facebook.com/SpaceFan/

Follow DeepAstronomy on Google+
http://google.com/+DeepAstronomy
http://google.com/+TonyDarnell

We also have a great Google+ Community, come share your thoughts and join the discussion!
https://plus.google.com/communities/1...
ANAΡΤΗΣΗ ΑΠΟ ΤΟ YOUTUBE 23/1/2016











BREAKING: "Planet 9" Is This Planet X Or Nibiru?

              





BREAKING: "Planet 9" Is This Planet X Or Nibiru?

Δημοσιεύτηκε στις 21 Ιαν 2016

Mike Brown and Konstantin Batygin have discovered a "New Planet" could it be the missing Planet X http://www.paulbegleyprophecy.com also http://www.telegraph.co.uk/news/scien... also https://www.yahoo.com/tech/planet-nin...



Accelerated Learning: How To Get Good at Anything in 20 Hours

             



Accelerated Learning: How To Get Good at Anything in 20 Hours

Δημοσιεύτηκε στις 26 Ιουν 2013

ANAΡΤΗΣΗ ΑΠΟ ΤΟ ΥΟUTUBE 23/1/2016

PLANET X - NIBIRU Crop Circles Tell ARRIVAL Date & Its NOT GOOD NEWS 2016

             





PLANET X - NIBIRU Crop Circles Tell ARRIVAL Date & Its NOT GOOD NEWS 2016

Δημοσιεύτηκε στις 23 Ιουν 2015

Crop
Circles Decoded & Tell the PLANET X - Nibiru Arrival Date - Nibiru
Planet X Timeline , This is SUPERB and A MUST WATCH Produced by Anu
Proph this excellent Presentation shows what all these years the crop
circles have been Warning us .
Do The Leaders have a Genius like
"Anu" on there team ? as this timeline is near our own other predictions
but earlier than we figured and ties in with all the world Leaders
preparing for something ? Is this what they have also known all along?
I
thank Anu for the mass of work and being so skilful in this
presentation as i rate amongst the slickest video and technical skill
production i have ever seen on Planet X. so thanks again Anu and PEOPLE Sub him here --- https://www.youtube.com/channel/UCUBJ...
As he is working on more Decodings !! I for one wait eagerly.
Finally ---- BE WARNED Check here -- http://youtuberats.com/ & check out http://cyberwarnings.com Protect Yourselves !!!!
http://nibiru-elenin.com/ & http://www.slaveplanet.net our NEW Mobile Users website is live on line. This website is additional to our existing and worth having on speed dial.
MUSIC TITLES CREDITS
"Finding The Balance"-"Full On"-"HitMan"-"Arcane­"-"Redletter"-"Undau­nted" by Kevin Macloud
http://incompetech.com/music/royalty-...

Evidence of a Ninth Planet

               

Evidence of a Ninth Planet

Δημοσιεύτηκε στις 20 Ιαν 2016

Caltech's
Konstantin Batygin, an assistant professor of planetary science, and
Mike Brown, the Richard and Barbara Rosenberg Professor of Planetary
Astronomy, discuss new research that provides evidence of a giant planet
tracing a bizarre, highly elongated orbit in the outer solar system.

Read the Caltech News Story: http://www.caltech.edu/news/caltech-r...

Learn more about:
- Konstantin Batygin's research: http://web.gps.caltech.edu/~kbatygin
- Mike Brown's research: http://web.gps.caltech.edu/~mbrown

Attributions:
- Artist's concept and animation: Robert Hurt (Caltech/IPAC) & WorldWide Telescope
- Images: NASA, Keck Observatory, Cerro Tolo Observatory
- Motion graphics & editing: Caltech Academic Media Technologies

Produced
in partnership with Caltech Academic Media Technologies and the Office
of Strategic Communications. ©2016 California Institute of Technology
www.caltech.edu.
ANAΡΤΗΣΗ ΑΠΟ ΤΟ YOUTUBE 23/1/2016

EVIDENCE OF A NINTH PLANET IN OUR SOLAR SYSTEM



EVIDENCE OF A NINTH PLANET IN OUR SOLAR SYSTEM
23/1/2016

Life Story of Billionaire Warren Buffet - Documentary

                  





Life Story of Billionaire Warren Buffet - Documentary

Δημοσιεύτηκε στις 4 Νοε 2014

Life Story of Bill Gates - Documentary

                    



Life Story of Bill Gates - Documentary

Δημοσιεύτηκε στις 10 Απρ 2014






Bill Gates Talks about What Books to Read

                   



Bill Gates Talks about What Books to Read

Δημοσιεύτηκε στις 7 Οκτ 2015

This
is a mashup of different Bill Gates videos, in which one of them he
gives a list of recent books he's read and thinks you should read too!

(All videos on this archive channel are perceived as public domain)

bill gates house,
bill gates vs steve jobs,
bill gates lil wayne,
bill gates documentary,
bill gates interview,
bill gates ice bucket challenge,
bill gates inspirational speech,
bill gates house tour,
bill gates speech,
bill gates car collection,
bill gates and steve jobs,
bill gates als,
bill gates and steve jobs full interview,
bill gates aquarium,
bill gates and warren buffett,
bill gates and elon musk,
bill gates ai,
bill gates advice,
bill gates angry moments,
bill gates artificial intelligence,
bill gates biography,
bill gates blue screen,
bill gates books





Τετάρτη 20 Ιανουαρίου 2016

BBC: The Secrets Of Quantum Physics | Science Documentary

                 

BBC: The Secrets Of Quantum Physics | Science Documentary

Δημοσιεύτηκε στις 15 Νοε 2015

BBC: The Secrets Of Quantum Physics | Science Documentary
Professor of physics Jim Al-Khalili investigates the most accurate and yet perplexing scientific theory ever - quantum physics.
[edit] Einsteins Nightmare

Professor
Jim Al-Khalili investigates the most accurate and yet perplexing
scientific theory ever - quantum physics. At the beginning of the 20th
century scientists were led into the hidden workings of matter, into the
sub-atomic building blocks of the world around us. They discovered
phenomena unlike any encountered before - a realm where things can be in
many places at once, where chance and probability call the shots and
where reality appears to only truly exist when we observe it. Albert
Einstein hated the idea that nature, at its most fundamental level, is
governed by chance. Jim reveals how, in the 1930s, Einstein thought he'd
found a fatal flaw in quantum physics because it implies that
sub-atomic particles can communicate faster than light in defiance of
the theory of relativity. In the 1960s the scientist John Bell showed
there was a way to test if Einstein was right and quantum mechanics was
actually mistaken. Jim repeats this critical experiment - with shocking
results.
Thank you for watching!
ANAΡΤΗΣΗ ΑΠΟ ΤΟ YOUTUBE 20/1/2016




Quantum Field Theory

                    

Quantum Field Theory

Δημοσιεύτηκε στις 14 Ιαν 2016

The
subatomic world has long been known to be truly mind-bending, with
particles that are waves and vice versa.  Cats are alive and dead and
everything is governed by probability.

While this remains true,
science has progressed since the invention of quantum mechanics and
scientists currently use an extended form of quantum mechanics called
quantum field theory or QFT.  QFT teaches us that all particles are
waves that interact with one another.  If you thought the quantum world
was weird before, modern ideas can give you a headache. In this video,
Fermilab’s Dr. Don Lincoln tells us all about it.
ANAΡΤΗΣΗ ΑΠΟ ΤΟ YOUTUBE 20/1/2016

DeepAstronomy LIVE!: Why I Hope We Don't Find Life on Mars

                  





DeepAstronomy LIVE!: Why I Hope We Don't Find Life on Mars

Ζωντανή μετάδοση στις 18 Ιαν 2016
Welcome to the inaugural episode DeepAstronomy podcast!

Follow DeepAstronomy on Twitter:
@DeepAstronomy

Like DeepAstronomy on Facebook:
https://www.facebook.com/DeepAstronomy/

Like Space Fan News on Facebook:
https://www.facebook.com/SpaceFan/

Follow DeepAstronomy on Google+
http://google.com/+DeepAstronomy
http://google.com/+TonyDarnell

We also have a great Google+ Community, come share your thoughts and join the discussion!
https://plus.google.com/communities/1...
ΑΝΑΡΤΗΣΗ ΑΠΟ ΤΟ YOUTUBE 20/1/2016




Τρίτη 19 Ιανουαρίου 2016

Why Do So Many People Get Cancer?

                

Why Do So Many People Get Cancer?

Δημοσιεύτηκε στις 14 Ιαν 2016

My Twitter https://twitter.com/nessyhill | Instagram https://instagram.com/nessyhill

Subscribe to BrainCraft! http://ow.ly/rt5IE

BrainCraft
is created and hosted by Vanessa Hill and brought to you by PBS Digital
Studios. Talking psychology, neuroscience & why we act the way we
do.
Sound design: Joel Werner (http://joelwerner.com)
Camera/Production Assistant: Kula Mahanta
And thank you to Joe Hanson and Jake Roper for their help.

Keep in touch, won't you?
Snapchat: nessyhill
Twitter https://twitter.com/nessyhill
Instagram https://instagram.com/nessyhill
Tumblr http://braincraft.tumblr.com
Facebook https://www.facebook.com/Braincraft

More BrainCraft:
How old are you, really? https://youtu.be/aWvw-v6tnZE

REFERENCES

I highly recommend this book:
Mukherjee, S. (2011). The emperor of all maladies: a biography of cancer. Simon and Schuster. http://www.amazon.com/exec/obidos/ASI...

Bianconi,
E., Piovesan, A., Facchin, F., Beraudi, A., Casadei, R., Frabetti, F.,
... & Perez-Amodio, S. (2013). An estimation of the number of cells
in the human body. Annals of human biology, 40(6), 463-471. http://www.tandfonline.com/doi/abs/10...

Hanahan, D., & Weinberg, R. A. (2000). The hallmarks of cancer. cell,100(1), 57-70. http://ac.els-cdn.com/S00928674008168...

Zeng,
C., Wen, W., Morgans, A. K., Pao, W., Shu, X. O., & Zheng, W.
(2015). Disparities by Race, Age, and Sex in the Improvement of Survival
for Major Cancers: Results From the National Cancer Institute
Surveillance, Epidemiology, and End Results (SEER) Program in the United
States, 1990 to 2010. JAMA Oncology, 1(1), 88-96. http://oncology.jamanetwork.com/artic...

Cancer statistics used:
http://www.cancerresearchuk.org/about...
http://www.cancer.gov/about-cancer/wh...
http://www.webmd.com/cancer/news/2013...
http://www.cancer.org/acs/groups/cont...
http://www.cancer.org/acs/groups/cont...
http://seer.cancer.gov/faststats/sele...

Causes of death and life expectancy:
http://demography.cpc.unc.edu/2014/06...
http://www.cdc.gov/nchs/data/dvs/lead...
http://demog.berkeley.edu/~andrew/191...

Video Clip:
https://ia801602.us.archive.org/18/it...
ΑΝΑΡΤΗΣΗ ΑΠΟ ΤΟ YOUTUBE 19/1/2016








Σάββατο 16 Ιανουαρίου 2016

Kathy Niakan: Scientist makes case to edit embryos

Kathy Niakan: Scientist makes case to edit embryos

'New research hope' from pancreatic cancer tissue bank

'New research hope' from pancreatic cancer tissue bank

  • 14 January 2016
  • From the section Health

Medical researchers hope a new bank storing tissue from patients will give them a clearer insight into pancreatic cancer.
This complex illness has the worst 10-year survival rate of any cancer, with most patients being told they may have less than a year to live.
The bank will collect samples from six hospitals in England and Wales.
The charity that funded it hopes there will eventually be better treatments and earlier diagnosis.

Pattern of brain chatter 'clue to anaesthesia response'

Pattern of brain chatter 'clue to anaesthesia response'

  • 15 January 2016
  • From the section Health
 Anaesthetist with mask
Image copyright Science Photo Library
Image caption Measuring brain network activity could be a useful way of judging the anaesthetic dose required
Taking readings of brain activity before patients go for surgery could help doctors give a more accurate dose of anaesthetic, researchers suggest.
At present, a patient's body weight is the main factor in deciding the dose.
But a University of Cambridge study indicated people with high levels of brain connectivity or "chatter" needed a larger dose to put them under.
And this could help doctors work out exactly the amount of anaesthetic a patient requires to become unconscious.

Ο βασιλιάς των ανέμων στον Κόσμο

Ο βασιλιάς των ανέμων στον Κόσμο

Εντοπίστηκε γαλαξίας όπου σχηματίζονται άνεμοι ταχύτητας 33 χιλιάδων χλμ./δευτ.!
Ο βασιλιάς των ανέμων στον Κόσμο
Καλλιτεχνική απεικόνιση των τρομερών ανέμων που δημιουργούνται στο κέντρο του γαλαξία που βρίσκεται σε απόσταση 800 εκ. ετών φωτός από εμάς. Credit: (ESA)


 
Ενας σπειροειδής γαλαξίας που μοιάζει πολύ με τον δικό μας σε απόσταση 800 εκ. ετών φωτός από εμάς έκρυβε στην καρδιά του ένα εντυπωσιακό κοσμικό «μυστικό». Με τη βοήθεια του διαστημικού τηλεσκοπίου XMM-Newton επιστήμονες του Instituto Nacional de Astrofísica, Óptica y Electrónica of Puebla, στο Μεξικό διαπίστωσαν ότι στο κέντρο του γαλαξία υπάρχει μια μελανή οπή με μάζα έξι εκ. φορές μεγαλύτερη από αυτή του Ηλιου

Βρέθηκε ο φάρος του Σύμπαντος

Βρέθηκε ο φάρος του Σύμπαντος

Υπερκαινοφανής αστέρας 570 δισ. φορές λαμπρότερος από τον Ηλιο
Βρέθηκε ο φάρος του Σύμπαντος
Καλλιτεχνική απεικόνιση του ASASSN-15lh, του λαμπρότερου σουπερνόβα στο Σύμπαν. Credit: (Beijing Planetarium/Jin Ma)



 
Ονομάζεται ASASSN-15lh, βρίσκεται σε απόσταση 3.8 δισ. ετών φωτός από εμάς. Πρόκειται για ένα υπερκαινοφανή αστέρα, ένα άστρο που καταστράφηκε σε μια έκρηξη σουπερνόβα, και εντοπίστηκε τον περασμένο Ιούνιο. Ομάδα επιστημόνων με επικεφαλής τον Σούμπο Ντονγκ του Ινστιτούτου Αστρονομίας και Αστροφυσικής Kavli του Πανεπιστημίου Peking στο Πεκίνο δημοσιεύουν στην επιθεώρηση «Science» τα ευρήματα της μελέτης που έκαναν στο ASASSN-15lh.
Πρόκειται για τον λαμπρότερο υπερκαινοφανή αστέρα στο Σύμπαν αφού σύμφωνα με τους ερευνητές η λαμπρότητα του είναι 570 δισ. φορές μεγαλύτερη από αυτή του Ηλιου ή 20 δισ. φορές πιο λαμπρό από όσο όλα μαζί τα περίπου 100 δισ. άστρα του γαλαξία μας!

Η επόμενη εποχή των παγετώνων «αναβάλλεται λόγω του ανθρώπου»


 

Η επόμενη εποχή των παγετώνων «αναβάλλεται λόγω του ανθρώπου»

Λόγω της παγκόσμιας θέρμανσης, οι πάγοι δεν αναμένεται να καλύψουν τον πλανήτη για τουλάχιστον 100.000 χρόνια
Η επόμενη εποχή των παγετώνων «αναβάλλεται λόγω του ανθρώπου»
Στην τελευταία παγετώδη περίοδο, σχεδόν ολόκληρη η Βρετανία ήταν καλυμμένη με πάγο


Πότσνταμ, Γερμανία 
Η ανθρωπότητα είναι πλέον ένας σημαντικός γεωλογικός παράγοντας που μπορεί να καθυστερήσει την επόμενη εποχή των παγετώνων, διαπιστώνει μελέτη στο κορυφαίο περιοδικό Nature. Λόγω της παγκόσμιας θέρμανσης, οι πάγοι δεν αναμένεται να καλύψουν τον πλανήτη για τουλάχιστον 100.000 χρόνια, δείχνουν οι προσομοιώσεις.

Κοσμικά κύματα «σηκώνουν» περιπλανώμενα άστρα

Κοσμικά κύματα «σηκώνουν» περιπλανώμενα άστρα

Αστρονόμοι εντόπισαν το εντυπωσιακό φαινόμενο στον γαλαξία μας
Κοσμικά κύματα «σηκώνουν» περιπλανώμενα άστρα
Το κρουστικό κύμα του Ζ Οφιούχου σε εικόνα του τηλεσκοπίου WISE (NASA/JPL-Caltech/UCLA)


 
Αστρονόμοι του τμήματος Φυσικής και Αστρονομίας του Πανεπιστημίου του Γουαϊόμινγκ παρατήρησαν ένα ιδιαίτερα εντυπωσιακό κοσμικό φαινόμενο. Εντόπισαν ορισμένα από τα λεγόμενα «περιπλανώμενα» αστρα του γαλαξία μας. Πρόκειται για άστρα που κινούνται ελεύθερα στο Διάστημα. Παρατηρώντας αυτά τα άστρα οι ερευνητές κατέγραψαν το τι συμβαίνει καθώς διασχίζουν τον γαλαξία μας.

Steven Weinberg: To Explain the World

                  



Steven Weinberg: To Explain the World

Δημοσιεύτηκε στις 18 Ιουν 2015
Nobel
Prize-winning physicist Steven Weinberg spoke about science and
history, drawing from his book “To Explain the World: The Discovery of
Modern Science.” Professor Weinberg painted a new and compelling picture
of the development of scientific thought and exploration in a
conversation moderated by Peabody Award-winning journalist John
Hockenberry.

Original Program date: May 31st 2015
This program was presented in collaboration with the New-York Historical Society.

Subscribe to our YouTube Channel for all the latest from WSF.
Visit our Website: http://www.worldsciencefestival.com/
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ANAΡΤΗΣΗ ΑΠΟ ΤΟ YOUTUBE 17/1/2016




NASA astronomical findings highlighted on This Week @NASA – January 8, 2016

                





NASA astronomical findings highlighted on This Week @NASA – January 8, 2016

Δημοσιεύτηκε στις 8 Ιαν 2016

New
NASA astrophysics findings were highlighted at the 227th American
Astronomical Society meeting, Jan. 4-8 in Kissimmee, Florida. The
findings, which ranged from runaway stars to a burping galaxy, were made
with the help of several NASA observation instruments, including the
Spitzer Space Telescope, the Wide-field Infrared Survey Explorer, the
Chandra X-ray Observatory, the Nuclear Spectroscopic Telescope Array and
others. Also, Next space station crew preparing for mission, Economical
new era of aviation, A new level of coral reef studies and more!
ANAΡΤΗΣΗ ΑΠΟ ΤΟ YOUTUBE 17/1/2016


Space Station Cargo Contracts on This Week @NASA – January 15, 2016

               



Space Station Cargo Contracts on This Week @NASA – January 15, 2016

Δημοσιεύτηκε στις 15 Ιαν 2016

On
Jan. 14, NASA announced it has awarded three cargo contracts to ensure
the critical science, research and technology demonstrations that are
informing the agency’s journey to Mars are delivered to the
International Space Station (ISS) from 2019 through 2024. The agency
unveiled its selection of Orbital ATK; Sierra Nevada Corporation; and
SpaceX to continue building on the initial resupply partnerships with
two American companies. Also, Space station spacewalk, Juno breaks
distance record, New Ceres images reveal details, Space Launch System
progress and NASA-developed software in self-driving cars!
ANAΡΤΗΣΗ ΑΠΟ ΤΟ YOUTUBE 17/1/2016







The Science of Jason-3

                  

The Science of Jason-3



Δημοσιεύτηκε στις 15 Ιαν 2016
During
a Jan. 15 briefing on NASA Television, panelists discussed the science
and research of the Jason-3 mission – scheduled to launch on Jan. 17
from Vandenberg Air Force Base in California. Jason-3 is the newest in a
series of satellites designed to maintain long-term satellite altimetry
observations of global sea surface height. These data provide critical
ocean information that forecasters need to predict devastating
hurricanes and severe weather before they arrive onshore. Over the long
term, Jason-3 will help us to track global sea level rise, an increasing
threat to the resilience of coastal communities and to the health of
our environment. The mission is a partnership between NASA, NOAA, Centre
National d’Etudes Spatiales, France’s space agency, and the European
Organization for the Exploitation of Meteorological Satellites.
ANAΡΤΗΣΗ ΑΠΟ ΤΟ YOUTUBE 17/1/2016

Getting To Know Jason-3

               

Getting To Know Jason-3



Δημοσιεύτηκε στις 15 Ιαν 2016
During
a Jan. 15 briefing on NASA Television, panelists gave an overview of
the Jason-3 mission – scheduled to launch on Jan. 17 from Vandenberg Air
Force Base in California. Jason-3 is the newest in a series of
satellites designed to maintain long-term satellite altimetry
observations of global sea surface height. During its mission -- planned
to last at least three years, with a goal of five years – the satellite
will monitor and precisely measure global sea surface heights, monitor
the intensification of tropical cyclones and support seasonal and
coastal forecasts. Jason-3 is a partnership between NASA, NOAA, Centre
National d’Etudes Spatiales, France’s space agency, and the European
Organization for the Exploitation of Meteorological Satellites.
ANAΡΤΗΣΗ ΑΠΟ ΤΟ YOUTUBE 17/1/2016






Pinpointing the Search for Life in Ancient Martian Hot Springs - J.R. Sk...

                



Pinpointing the Search for Life in Ancient Martian Hot Springs - J.R. Sk...

Δημοσιεύτηκε στις 15 Ιαν 2016

The
recent explosion of Martian surface data is set to revolutionize the
way we explore that planet. Until now, mission science has had to catch
up with the imposed engineering constraints. With this data, we can plan
exciting new missions to specific locations with enough precision to
allow engineers to get us there safely. One of the most appealing uses
of this methodology is the search for evidence that life once existed on
Mars. Here we discuss the developing effort to send a mission to search
for life in an ancient hot spring deposit. This type of site would have
all of the known requirements and preferences for life; warm waters,
thermal and chemical energy, access to the subsurface and a great medium
of preservation. With the target in mind, we can develop the
instrumentation package and mission architecture to optimize the science
return and minimize the cost to begin a hopefully long line of
targeted, focused missions to explore the nuances of our Solar System.
ΑΝΑΡΤΗΣΗ ΑΠΟ ΤΟ YOUTUBE 17/1/2016



Σάββατο 9 Ιανουαρίου 2016

Παγκόσμιο ρεκόρ βηματοδότη σε ελληνίδα ασθενή

Παγκόσμιο ρεκόρ βηματοδότη σε ελληνίδα ασθενή
Αντί για 10 χρόνια που είναι ο μέσος όρος διάρκειας, ο συγκεκριμένος βηματοδότης λειτουργεί ασταμάτητα εδώ και 32 χρόνια σπάζοντας το ρεκόρ των 26 ετών

Παγκόσμιο ρεκόρ μακροβιότητας βηματοδότη έχει ελληνίδα ασθενής, όπως επιβεβαιώνεται και από δημοσίευση στην επιστημονική επιθεώρηση «Case reports in Cardiology».

Ο βηματοδότης, τον οποίο τοποθέτησε ο έλληνας καρδιολόγος Ευάγγελος Παπαστεριάδης στις 10 Οκτωβρίου του 1983, ρυθμίστηκε έτσι ώστε η συσκευή να έχει «έξυπνη» κατανάλωση και η μπαταρία εξαιρετικά μεγάλη διάρκεια. Eτσι, αντί για 10 χρόνια, που είναι ο μέσος όρος διάρκειας, ο συγκεκριμένος βηματοδότης λειτουργεί ασταμάτητα εδώ και 32 χρόνια. Το προηγούμενο ρεκόρ ήταν 26 χρόνια και είχε δημοσιευθεί εδώ και 8 χρόνια.

unior doctors strike to go ahead on 12 January

unior doctors strike to go ahead on 12 January

  • 8 January 2016
  • From the section Health
 Demonstrators at a rally and protest march for junior doctors in London
Image copyright PA
Talks to resolve the junior doctors dispute will "not prevent" strike action on 12 January, conciliation service Acas has said.
A spokesman said talks between the British Medical Association and NHS Employers had been "constructive".
However, the two sides "are not able to prevent the industrial action planned".
The strike begins at 08:00 GMT across England and could affect thousands of NHS patients as junior doctors will only provide emergency care.
Earlier this week the BMA announced three spells of strike action across England, after negotiations with the government ended with no resolution.
Issues being disputed by the BMA and NHS include weekend pay.

Blocking brain inflammation 'halts Alzheimer's disease'

Blocking brain inflammation 'halts Alzheimer's disease'

  • 8 January 2016
  • From the section Health
Microglia are immune cells present in the brain
Image copyright Science Photo Library
Image caption Immune cells called microglia in the brain were targeted to reduce memory problems
Blocking the production of new immune cells in the brain could reduce memory problems seen in Alzheimer's disease, a study suggests.
University of Southampton researchers said their findings added weight to evidence that inflammation in the brain is what drives the disease.
A drug used to block the production of these microglia cells in the brains of mice had a positive effect.

Ελληνική ματιά στο μέλλον

Ελληνική ματιά στο μέλλον

19 ξεχωριστοί έλληνες επιστήμονες μιλούν στο ΒΗΜΑSCIENCE για τα επιτεύγματα που τους έκαναν να διακριθούν μέσα στο 2014 αλλά και για τις προσδοκίες τους για το μέλλον του πεδίου τους
Ελληνική ματιά στο μέλλον


 
Ξεχώρισαν με το ερευνητικό έργο και τις δημοσιεύσεις τους μέσα στο 2014 σε παγκόσμιο επίπεδο χαρίζοντας... ελληνικό χρώμα σε πολλά και διαφορετικά πεδία της επιστήμης, από την ιατρική, τη γενετική, τη βιολογία και την παλαιοανθρωπολογία, ως την κοσμολογία, την αστρονομία, τη σωματιδιακή φυσική, τη μηχανική, την τεχνολογία, την πληροφορική και τις νευροεπιστήμες.

NEOCam: O κυνηγός απειλητικών αστεροειδών

NEOCam: O κυνηγός απειλητικών αστεροειδών

Η NASA μελετά την κατασκευή ενός νέου διαστημικού τηλεσκοπίου
NEOCam: O κυνηγός απειλητικών αστεροειδών
Καλλιτεχνική απεικόνιση του διαστημικού τηλεσκοπίου NEOCam που θα αναζητά απειλητικούς αστεροειδείς


 
 
Εδώ και λίγο καιρό η NASA δημιούργησε ένα ακόμη ερευνητικό πρόγραμμα το οποίο ονόμασε Discovery. Οι επιτελείς του προγράμματος θα μελετήσουν συνολικά πέντε προτάσεις νέων διαστημικών αποστολών θα δώσουν κάποια αρχική χρηματοδότηση σε κάποιες εξ αυτών και ανάλογα με την πρόοδο τους τελικά θα επιλέξουν ποια τελικά θα υλοποιηθεί. Από τις προτάσεις του προγράμματος εκείνη που συγκεντρώνει αυτή τη στιγμή τα φώτα της δημοσιότητας είναι η κατασκευή ενός νέου διαστημικού τηλεσκοπίου.

Ενα δισ. πλανήτες σαν τη Γη στον Γαλαξία

Ενα δισ. πλανήτες σαν τη Γη στον Γαλαξία

Η αποστολή Kepler K2 εντόπισε εκατοντάδες νέους εξωπλανήτες
Ενα δισ. πλανήτες σαν τη Γη στον Γαλαξία
Πόσοι πλανήτες με μέγεθος σαν αυτό της Γης υπάρχουν στον γαλαξία; Οι ειδικοί λένε περίπου ένα δισ. Credit: (NASA, ESA, and G. Bacon (STScI)


 
Ερευνητές στις ΗΠΑ ανακοίνωσαν ότι εντόπισαν εκατοντάδες νέους εξωπλανήτες αλλά προχώρησαν και σε μια εκτίμηση για τον αριθμό των πλανητών στον γαλαξία μας οι οποίοι έχουν μέγεθος παρόμοιο με αυτό της Γης. Οι ειδικοί υποστηρίζουν ότι το μέγεθος της Γης είναι ιδανικό στην ανάπτυξη συνθηκών ευνοϊκών για την παρουσία της ζωής.