Do not dwell in the past, do not dream of the future, concentrate the mind on the present moment.
Buddha
Seeing the Red of ‘La Superba,’ a Magnificent Springtime Carbon Star
Periodic Table of Elements A Resource for Elementary, Middle School, and High School Students
Cardiocondyla pirata sp. n. – a new Philippine ant with enigmatic pigmentation pattern (Hymenoptera, Formicidae)
What is quantum gravity?
What is M-theory?
How Stem Cell Cloning Works (Infographic) by Karl Tate, LiveScience Infographic ArtistDate: 16 May 2013

Source:LiveScienceChrist of the Abyss at San Fruttuoso, Liguria
Amazing Sea Butterflies Are the Ocean’s Canary in the Coal Mine
Portrait of an Eastern Screech Owl
NASA – Giant Gas Cloud in System NGC 6240
ESA – Mars images
Massive Number Of Elephants Being Slaughtered In The Central African Republic Currently, Field Reports Warn
NASA – The Rose
Herschel closes its eyes on the Universe
New Clues Behind Antimatter Mystery Found by LHC
The Art of Physics: Winning Photos of Giant Particle Colliders
Watch your step !
The Shambulance: Reflexology and Other Stories
Simons Foundation – Perpetual Motion Test Could Amend Theory of Time
Star-and Planet-Forming Regions May Hold Key to Life’s Chirality
This Week in Science Highlights of Research in This Issue
Bullfrogs’ hair cells yield clues on how humans detect faint sounds.
NRAO – Einstein’s Gravity Theory Passes Toughest Test Yet
Scientists Find Antibody that Transforms Bone Marrow Stem Cells Directly into Brain Cells
Live Science – Controversially, Physicist Argues Time Is Real
ScienceNow – Solving the Mystery of Supercharged Lightning
NSF – Mechanism of RNA Recoding (Image 1)
NSF – Red Blood Cells Flowing Though Blood Vessel in Heart
NSF – Impact of Radiation From Early Stars on Primordial Gas
NSF – TTUKa-1 Mobile Doppler Radar During VORTEX2
NASA – Meteors Meet Saturn’s Rings
ESA – Fully assembled Vega VV02 on pad
ESA – Belize Barrier Reef
ESA – Removing Proba-V’s last covers
IceBridge Survey Flight Over Saunders Island and Wolstenholme Fjord
PNAS – Cover image : Strongylocentrotus purpuratus
America’s Most Endangered River of 2013: The Colorado
Galaxies: 16 of the universe’s most stunning
Astronaut vs. Robonaut
NASA – Hubble Sees a Horsehead of a Different Color
ESA observing earth – DEMOCRATIC REPUBLIC OF CONGO
Λυρίδες, μια βροχή διαττόντων αστέρων – physicsgg
ESO – KMOS on the Very Large Telescope at the time of first light
Thirty Meter Telescope
NASA – Hubble Catches Dusty Detail
NOC – Pointing the way to Ocean Business
GIZMODO – Andrew Tarantola – 15 Human Weapons Made from Animal Weapons
Science Now – ScienceShot: Iceman Had Bad Teeth – by Andrew Curry on 11 April 2013
The Scientist – Dinosaur Embryo Graveyard – By Ed Yong | April 10, 2013
The Scientist – Models of Transparency – By Joan K. Heath, David Langenau, Kirsten C. Sadler, and Richard White | April 1, 2013
The Scientist – Atomic Force Microscopy – The new technique reveals unprecedented details of microscopic life. By Amy Maxmen | April 2, 2013
ESA – Explosive Crater Twins on Mars
NASA – Great Sandy Desert, Australia
AUSTRALIAN GEOGRAPHIC – GALLERY: Incredible new Antarctica photos
PlanetSave -Tiger Spider, New Species Of Tarantula The Size Of A Face Found In Sri Lanka
NASA – Napo River in Ecuador and Peru
Australian Geographic – GALLERY: Sights and sounds of the Tarkine
Latest News – Τελευταία Νέα
Phys.org – latest science and technology news stories- Science sinks teeth into Neanderthal weaning habits 22/05/2013Neanderthals may have started weaning their young from seven months of age and transferred them to solid food by just over a year, a fossil tooth study said Wednesday.
- Small, speedy plant-eater extends knowledge of dinosaur ecosystems 22/05/2013Dinosaurs are often thought of as large, fierce animals, but new research highlights a previously overlooked diversity of small dinosaurs. In the Journal of Vertebrate Paleontology, a team of paleontologists from the University of Toronto, Royal Ontario Museum, Cleveland Museum of Natural History and University of Calgary have described a new dinosaur, the s […]
- As chaos celebrates its 50th birthday, biophysicist develops a new method to visualize it 22/05/2013Exactly 50 years after the US-American meteorologist Edward Lorenz discovered chaos (remember the "butterfly effect"?) the topic is still as fascinating as ever. A new visualization technique developed at the University of Vienna helps to make chaos visible to the naked eye. The method, which is being published in Royal Society journal Interface, a […]
- Science sinks teeth into Neanderthal weaning habits 22/05/2013
physicsworld.com: news- Magnetic dipoles line up 21/05/2013New interactions could be used to develop future hard-disk drives
- Heinrich Rohrer: 1933–2013 21/05/2013Scanning tunnelling microscope pioneer shared Nobel prize
- Flipping spins spread like wildfire 20/05/2013Magnetic system could shed light on forest fires and chemical reactions
- Magnetic dipoles line up 21/05/2013
ScienceDaily: Latest Science News- Forecast for Saturn's moon Titan: Wild weather could be ahead 22/05/2013Saturn's moon Titan might be in for some wild weather as it heads into its spring and summer, if two new models are correct. Scientists think that as the seasons change in Titan's northern hemisphere, waves could ripple across the moon's hydrocarbon seas, and hurricanes could begin to swirl over these areas, too. The model predicting waves tri […]
- Overeating learned in infancy, study suggests 22/05/2013Research shows that clinical obesity at 24 months of age strongly traces back to infant feeding patterns.
- Insomnia may cause dysfunction in emotional brain circuitry 22/05/2013A new study provides neurobiological evidence for dysfunction in the neural circuitry underlying emotion regulation in people with insomnia, which may have implications for the risk relationship between insomnia and depression.
- Detecting mirror molecules: New technique reliably tells left-handed from right-handed variant of a compound 22/05/2013Physicists have developed a novel technique that can detect molecular variants in chemical mixtures -- greatly simplifying a process that is one of the most important, though time-consuming, processes in analytical chemistry.
- Tropical upper atmosphere 'fingerprint' of global warming 22/05/2013The winds of the quasibiennial oscillation in the tropical upper atmosphere have greatly weakened at some altitudes over the last six decades, according to a new study. The finding is consistent with computer model projections of how the upper atmosphere responds to global warming induced by increased greenhouse gas concentrations.
- Fragile mega-galaxy is missing link in history of cosmos 22/05/2013Two hungry young galaxies that collided 11 billion years ago are rapidly forming a massive galaxy about 10 times the size of the Milky Way, according to new research.
- Model of Sun's magnetic field created 22/05/2013Researchers have uncovered an important mechanism behind the generation of astrophysical magnetic fields such as that of the Sun.
- Largest genetic sequencing study of human disease 22/05/2013Researchers have completed the largest sequencing study of human disease to date, investigating the genetic basis of six autoimmune diseases.
- First genomic survey of human skin fungal diversity 22/05/2013In the first study of human fungal skin diversity, researchers sequenced the DNA of fungi at skin sites of healthy adults to define the normal populations across the skin and to provide a framework for investigating fungal skin conditions.
- Norway spruce genome sequenced: Largest ever to be mapped 22/05/2013Scientists have mapped the gene sequence of Norway spruce (the Christmas tree) -- a species with huge economic and ecological importance -- and that is the largest genome to have ever been mapped. The genome is complex and seven times larger than that of humans.
- Forecast for Saturn's moon Titan: Wild weather could be ahead 22/05/2013
physicsgg- Απαντήσεις στα θέματα Φυσικής κατεύθυνσης 2013 22/05/2013ΘΕΜΑΤΑ ΦΥΣΙΚΗΣ ΚΑΤΕΥΘΥΝΣΗΣ Γ’ ΛΥΚΕΙΟΥ 2013 (σε pdf): πατήστε ΕΔΩ προτεινόμενες λύσεις …. Β1. Η αρχική ενέργεια είναι Εαρχ = C V2/2 = 4•10-3 J και η τελική Ετελ= L I2/2 = 2•10-3 J Επομένως η συνολική ενέργεια μειώθηκε κατά ΔΕ = 2•10-3 J Β2. f2 = 3 f1, οπότε λ2 = λ1/3 Χρησιμοποιώντας τις σχέσεις r1 – […] […]physicsgg
- CIBER: το πείραμα που θα ερευνήσει την απαρχή του Σύμπαντος 22/05/2013… ξεκινά στις 4 Ιουλίου Ο σχηματισμός των γαλαξιών ακολουθεί τα βαρυτικά «πηγάδια» που παράγονται από τη σκοτεινή ύλη. Εκεί συγχωνεύτηκαν τα αέρια ελεύθερου υδρογόνου, και δημιουργήθηκαν τα πρώτα άστρα. Το Πείραμα Κοσμικού Υπέρυθρου Υποβάθρου (CIBER) μελετά τη συνολική φωτεινότητα του ουρανού, ώστε να εξετάσει στοιχεία από τα πρώτα αστέρια και γαλαξίες, χρησ […]physicsgg
- Βίντεο: Μythbusters και Διαστημικός Σταθμός 22/05/2013Ο αστροναύτης Chris Hadfield συνεργάζεται με τους Jamie Hyneman και Adam Savage των Mythbusters. Στο πρώτο βίντεο βλέπουμε τρία διασκεδαστικά παιχνίδια με τα οποία μπορεί κανείς να περνάει ευχάριστα τον ελεύθερο χρόνο του, αν ποτέ βρεθεί στον Διεθνή Διαστημικό Σταθμό: Στη συνέχεια ακολουθούν άλλα δυο βίντεο που ασχολούνται με τα τρόφιμα και το φαγητό στον [… […]physicsgg
- Έπιασε δουλειά ξανά το Curiosity 21/05/2013Mετά από διακοπή των εργασιών, λόγω ελλιπούς επικοινωνίας με τη Γη (διαβάστε σχετικά: Όταν ευθυγραμμίζονται Γη – Ήλιος – Άρης), το Curiosity άρχισε πάλι τις έρευνές του στην επιφάνεια του κόκκινου πλανήτη. Το Curiosity πραγματοποίησε γεώτρηση στην τοποθεσία που φέρει το όνομα “Cumberland”, που μοιάζει με το σημείο που έκανε την πρώτη του γεώτρηση στην […] […]physicsgg
- Απαντήσεις στα θέματα Φυσικής Γενικής Παιδείας 2013 20/05/2013Για τα ΘΕΜΑΤΑ ΦΥΣΙΚΗΣ ΚΑΤΕΥΘΥΝΣΗΣ 2013 πατήστε ΕΔΩ Για τα ΘΕΜΑΤΑ ΦΥΣΙΚΗΣ ΓΕΝΙΚΗΣ ΠΑΙΔΕΙΑΣ 2013 ( σε pdf): πατήστε ΕΔΩ προτεινόμενες λύσεις… ΘΕΜΑ Α – ΑΠΑΝΤΗΣΕΙΣ ΘΕΜΑ Β – ΑΠΑΝΤΗΣΕΙΣ Β1 = i διότι oπότε Α2=Α1 – 4 και Ζ2 = Ζ1 – 1 B2 = iii διότι, εφόσον V’=1,25V , έχουμε: και B3=iii Iσχύει: […] […]physicsgg
- Οι μικρότερες σταγόνες του κόσμου 20/05/2013… από πλάσμα κουάρκ – γλοιονίων Αναγκάζοντας πρωτόνια να συγκρουστούν με βαριά ιόντα μολύβδου σχεδόν με την ταχύτητα του φωτός, ερευνητές του Μεγάλου Επιταχυντή Αδρονίων φαίνεται ότι δημιούργησαν τα μικρότερα σταγονίδια υγρού που έχουν καταγραφεί ποτέ. Όμως το «υγρό» από το οποίο αποτελούνται δεν έχει καμία σχέση με τα υγρά που γνωρίζουμε στην καθημερινή ζωή […]physicsgg
- Βακτήρια ως “ζωντανοί” υπολογιστές 20/05/2013Μηχανικοί του ΜΙΤ μετέτρεψαν βακτηριακά κύτταρα σε «ζωντανούς» υπολογιστές, που είναι σε θέση να υπολογίσουν λογαρίθμους, να κάνουν διαιρέσεις και να εξάγουν τετραγωνικές ρίζες, χρησιμοποιώντας τρία ή και λιγότερα γενετικά τμήματα. Η όλη ιδέα προήλθε από τον τρόπο λειτουργίας των αναλογικών ηλεκτρονικών κυκλωμάτων. Οι ερευνητές δημιούργησαν συνθετικά υπολογι […]physicsgg
- Kάψουλα με έμβιους οργανισμούς στο διάστημα 20/05/2013Μέσα στην κάψουλα βρίσκονταν 45 ποντίκια, 8 γερβίλοι (τρωκτικά της Μογγολίας), 15 σαύρες, 20 σαλιγκάρια και άλλα ζώα, τα οποία παρακολουθούνταν διαρκώς κατά τη διάρκεια της “αποστολής” τους Μια ρωσική διαστημική κάψουλα που παρέμεινε στο διάστημα επί έναν μήνα έχοντας για επιβάτες της ποντίκια, σαύρες και σαλιγκάρια, στο πλαίσιο επιστημονικών πειραμάτων για […]physicsgg
- Το νέο τραγούδι του περιοδικού πίνακα 19/05/2013Lyrics There’s Hydrogen and Helium Then Lithium, Beryllium Boron, Carbon everywhere Nitrogen all through the air With Oxygen so you can breathe And Fluorine for your pretty teeth Neon to light up the signs Sodium for salty times Magnesium, Aluminium, Silicon Phosphorus, then Sulfur, Chlorine and Argon Potassium, and Calcium so you’ll grow strong Scandium, [… […]physicsgg
- Η επαλήθευση της Γενικής Θεωρίας της Σχετικότητας … 18/05/2013… από τον Arthur Eddington Λίγο μετά την λήξη του πρώτου παγκόσμιου πολέμου, ο Arthur Eddington ταξίδεψε στο νησί Príncipe κοντά στην Αφρική, στον Ατλαντικό ωκεανό, για να παρατηρήσει την έκλειψη Ηλίου της 29 Μαΐου 1919. Κατά τη διάρκεια της ολικής έκλειψης φωτογράφησε τους αστέρες που φαίνονταν δίπλα στον Ήλιο. Σύμφωνα με την Γενική Θεωρία […] […]physicsgg
- Απαντήσεις στα θέματα Φυσικής κατεύθυνσης 2013 22/05/2013
Χείλων – Ιστορικές αναδρομές και προβληματισμοί
Periklis Deligiannis Περικλής Δεληγιάννης / Ιστορικές Αναδιφήσεις – Delving into History
Nikolas Gravanis guitar teacher
![The Universe can be a very gray place. But this week, we’ll look at a fine example of a class of objects that defies this trend. Many first time stargazers are surprised when the Trifid or the Orion Nebula fails to exhibit the bright splashy colors seen in Hubble photos. The fault lies not with the Universe, but in our very own eyes [...]](http://d1jqu7g1y74ds1.cloudfront.net/wp-content/uploads/2013/05/La-Superba-Wide-580x426.jpg)




![Scientists have used Chandra to make a detailed study of an enormous cloud of hot gas enveloping two large, colliding galaxies. This unusually large reservoir of gas contains as much mass as 10 billion Suns, spans about 300,000 light years, and radiates at a temperature of more than 7 million degrees. This giant gas cloud, which scientists call a "halo," is located in the system called NGC 6240. Astronomers have long known that NGC 6240 is the site of the merger of two large spiral galaxies similar in size to our own Milky Way. Each galaxy contains a supermassive black hole at its center. The black holes are spiraling toward one another, and may eventually merge to form a larger black hole [...]](http://www.nasa.gov/images/content/745197main_ngc6240_665.jpg)

![Elephants are currently being slaughtered in huge numbers in the Central African Republic (CAR), according to field reports that the WWF and WCS have received in recent days [...]](http://c1planetsavecom.wpengine.netdna-cdn.com/files/2013/04/image49-600x398.jpg)


![How the modern universe is primarily composed of matter and not antimatter has foxed astrophysicists for decades, but a result from a Large Hadron Collider (LHC) experiment has uncovered a new clue behind the matter-antimatter asymmetry mystery [...]](http://static.ddmcdn.com/gif/blogs/dnews-files-2013-04-big-bang-670x440-130426-jpg.jpg)

![A few weeks ago, my friend Devin and I drove six hours out of our way so Devin could meet the Grand Canyon and so I could see it for the sixth time. We walked up to the South Rim at Mather Point, stood for a moment, both speechless and slightly unsteady on that overwhelming edge and then sat with our feet dangling into the abyss, talking a bit about rocks, rivers and trails, but mostly marveling in silence [...]](http://theblondecoyote.files.wordpress.com/2013/04/tarantula1.jpg?w=300&h=330#038;h=554)
![Sticking a Q-tip up one’s nose is not the source of many great insights. Yet it’s how an American doctor in the early 20th century developed the theory that became modern reflexology. He would be proud—though maybe a little confused—to see people today flocking to reflexology spas, where practitioners treat all their problems via the soles of their feet [...]](http://1.bp.blogspot.com/-3rlYleb3E9s/UXpknLmV54I/AAAAAAAABr0/_yk6JFEkgqo/s640/Foot-massage-chart.jpg)
![Physicists plan to create a “time crystal” — a theoretical object that moves in a repeating pattern without using energy — inside a device called an ion trap [...]](https://simonsfoundation.org/wp-content/uploads/2013/04/view-into-ion-trap-apparatus_web.jpg)


![Scientists don't fully understand how we detect faint sounds, because they should be drowned out by the background noise that the ear itself produces. Now, however, researchers at UCLA have produced clues to the process that allows us to hear a pin drop, or understand a whispered comment. They did so using hair cells taken from bullfrogs that they studied in laboratory glassware [...]](http://www.insidescience.org/sites/default/files/hearing-top%20image.jpg)
![A strange stellar pair nearly 7,000 light-years from Earth has provided physicists with a unique cosmic laboratory for studying the nature of gravity. The extremely strong gravity of a massive neutron star in orbit with a companion white dwarf star puts competing theories of gravity to a test more stringent than any available before. Once again, Albert Einstein's General Theory of Relativity, published in 1915, comes out on top [...]](http://www.nrao.edu/pr/2013/gravitylab/nsandwd.small.jpg)

















![An area in the northwest of the Democratic Republic of Congo is pictured in this image taken on 26 June 2011 by the French SPOT-4 satellite. Most of the lighter green areas are deforested, while the darker green are areas of dense – and possibly natural – vegetation. The lines cutting through the image are roads, many with structures built along them. Clusters of purple dots are larger settlements. A river snakes through the upper part of the image and below it there appears to be a square in light green. Judging by the precision of the outline, we can deduce that this is a patch of land that was either intentionally spared from deforestation or has been reforested [...]](http://spaceinimages.esa.int/var/esa/storage/images/esa_multimedia/images/2013/04/democratic_republic_of_congo/12630824-1-eng-GB/Democratic_Republic_of_Congo_node_full_image.jpg)
![Η πρώτη βροχή διαττόντων αστέρων της άνοιξης, οι Λυρίδες, άρχισαν δειλά-δειλά να εμφανίζονται στον ουρανό του βορείου ημισφαιρίου, όπου ανήκει και η Ελλάδα. Οι πτώσεις των συγκεκριμένων μετεώρων, που αποκαλούνται και «πεφταστέρια», θα αποκορυφωθούν την Κυριακή 21 και τη Δευτέρα 22 Απριλίου, ενώ θα διαρκέσουν σε πιο αραιή μορφή έως τις 25 του μηνός [...]](http://physicsgg.files.wordpress.com/2013/04/lyrids-2013-april-22_edited-1.jpg?w=300&h=270#038;h=443)





![Europe's best-known mummy wasn't just a medical mess; he also had terrible teeth, according to a new study. Ötzi (inset photo), a Stone Age man who died atop a glacier about 5300 years ago, suffered from severe gum disease and cavities. His teeth, back and front, were also heavily worn from chewing coarse grain and use as a "third hand" for gripping tools and cutting. When Ötzi was discovered atop a glacier on the Austro-Italian border, his frozen corpse was intensively studied. But no one took a close look at his teeth until now [...]](http://news.sciencemag.org/sciencenow/assets/2013/04/10/sn-otziteeth.jpg)
![Sometime in the early Jurassic period, between 190 and 197 million years ago, a flood swept through a dinosaur nesting site in what is now southern China. Dozens of embryos were suffocated in their eggs and their bones were separated from each other, carried away, and buried under sediment [...]](http://www.the-scientist.com/images/News/April2013/Dinosaur_embryo.jpg)


![Dramatic underground explosions, perhaps involving ice, are responsible for the pits inside these two large martian impact craters, imaged by ESA’s Mars Express on 4 January. The ‘twin’ craters are in the Thaumasia Planum region, a large plateau that lies immediately to the south of Valles Marineris, the largest canyon in the Solar System. The northernmost (right) large crater in this scene was officially given the name Arima in early 2012, but the southernmost (left) crater remains unnamed. Both are just over 50 km wide and display intricate interior features [...]](http://www.esa.int/var/esa/storage/images/esa_multimedia/images/2013/04/arima_twins_topography/12612851-1-eng-GB/Arima_twins_topography_large.jpg)




![SARA KOSCHAK AND HER partner, Andrew Skeoch, have been recording nature for 20 years. It’s a venture driven solely by passion, in which the pair capture the sounds of natural settings from Africa to Indian, Europe to the Americas, Australia, and deep into the jungles of the Pacific islands, creating CDs and downloadable files to transport listerners from their homes to a soundscape far away. The recordings are available through an online store, but many are free and are accessible through the couple's website, Listening Earth. “Nature recordings are our way of sharing a passion and love,” says Sarah. But her desire to record the soundscape of the Tarkine region – a wild system of rainforest and lush native wilderness in Tasmania's north-west – was motivated by something more pressing [...]](http://www.australiangeographic.com.au/assets/images/article/journal/13384/tarkine-main.jpg)




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