Posts

October 13, 2014

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4:00 AM | Ecco NOvA, l’esperimento più avanzato del Fermilab sui neutrini
Grazie al recente completamento dei laboratori, è entrato in funzione, e con successo, l’esperimento NOvA che esplorerà le proprietà dei neutrini che rappresentano una delle chiavi per svelare alcuni misteri ancora irrisolti dell’Universo. Si tratta di un esperimento basato sull’accelerazione del più potente fascio di neutrini mai realizzato negli Stati Uniti e quello caratterizzato dalla distanza […]

October 12, 2014

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11:15 PM | Populações estelares. I) Quantas estrelas tem a Via Láctea? Diferença entre população e amostra
Você já olhou para o céu e se perguntou quantas estrelas têm a Via Láctea? A população total de estrelas em nossa Galáxia é enorme (algumas poucas centenas de bilhões de estrelas). Devido ao seu grande numero não podemos contar nem estudar cada uma dessas estrelas. Os astrônomos devem selecionar pequenas amostras (centenas ou milhares de estrelas) para poder estudar a nossa Galáxia.Como selecionar uma […]
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10:46 PM | astrotweeps
in case any of you are of the twitter persuasion, i will be taking over the astrotweeps twitter account this week. here is a short bio that mentions several topics i will be talking about throughout the week, in addition to my general daily schedule and highlights from recent events.This week features Amanda Bauer. Amanda is a research astronomer and outreach officer at the Australian Astronomical Observatory (AAO) based in Sydney, Australia. She started this 50/50 role one year ago and is […]
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8:46 PM | Stellar populations. I) What is the difference between population and sample?
How many stars are in the Milky Way? The total population of stars in our Galaxy is enormous (about a few hundred billion). We cannot count or study every single star in our Galaxy, hence Astronomers must select relatively small samples of stars (hundreds or thousands) to study our Galaxy.How to select a sample that is representative of a large population? This is far from trivial; incorrect conclusions can be obtained if there is a bias in the selection. An example is the study […]
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6:51 PM | The Ig Nobel Prize
Neil deGrasse Tyson and co-host Leighann Lord dive into the strange world of the Ig® Nobel Prize for research that first makes you laugh, and then makes you think. Read more and listen to the full episode at http://www.startalkradio.net/show/the-ig-nobel-prize
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6:14 PM | Weekend Diversion: Your city in fantasy (Synopsis)
“Fantasy is silver and scarlet, indigo and azure, obsidian veined with gold and lapis lazuli. Reality is plywood and plastic, done up in mud brown and olive drab. Fantasy tastes of habaneros and honey, cinnamon and cloves, rare red meat and wines as sweet as summer. Reality is beans and tofu, and ashes at the…
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6:14 PM | Weekend Diversion: Your city in fantasy
How one artist is transforming the modern metropolis into Tolkien-style middle Earth masterpieces.Continue reading on Medium »
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11:30 AM | What Does 200 Billion Stars Really Mean?
The sheer scale of space is overwhelming. Oh, sure, we have words to make it more palatable, like “light years” — as if a distance of 10 trillion kilometers is graspable by our puny simian brains. And when I think about our galaxy, the Milky Way, I know that it’s 100,000 light years across, but that’s just a number, the reality too huge to truly hold in my mind. But what really gets to me is how many stars are in the galaxy. Astronomers, including me, […]
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9:37 AM | Violini, storia di un'imitazione
Il primo violino della storia fu realizzato in Italia, nel 16° secolo. Da allora, lo sforzo dei liutai è stato quello di migliorarne sempre le qualità acustiche e la ‘suonabilità’. Ma come si è evoluta la forma e l'arte dei mastri lituai nel tempo, e così quella dei loro preziosi oggetti musicali? A chiederselo è oggi Daniel Chitwood del Donald Danforth Plant Science Center (Missouri), che presneta i risultati della sua ricerca […]
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12:15 AM | (Sci-fi) books recommended
i asked twitter for some book recommendations.  either my twitter followers read a lot of science fiction, or they think i should read a lot more!thought i'd share the list here, in case anyone is looking for new books. the ones i've chosen to start with are The Martian by Andy Weir and The Eyre Affair by Jasper Fforde, which each received quite a few independent recommendations!the new ann leckie book, if you like sci-fifun sci fi-ish books: redshirts, ready player one, & mr. […]

October 11, 2014

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10:51 PM | Comments of the Week #31: From black holes to free quarks
“No testimony is sufficient to establish a miracle, unless the testimony be of such a kind, that its falsehood would be more miraculous than the fact which it endeavors to establish.” -David Hume It’s sometimes mind-boggling how many different aspects of the Universe we touch on here at Starts With A Bang, and the past…
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8:55 PM | Ask Ethan #57: How will Black Holes die? (Synopsis)
“Sit down before fact as a little child, be prepared to give up every preconceived notion, follow humbly wherever and to whatever abysses nature leads, or you shall learn nothing.” -T.H. Huxley It’s said that nothing lasts forever, and as far as we can tell, this is true. Every living thing that has ever lived will…
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8:55 PM | Ask Ethan #57: How will Black Holes die?
The densest, most massive objects in the Universe will live an awfully long time, but not forever. Here’s what happens to them.Continue reading on Medium »
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3:56 PM | Un superocchio a 36 colori
Nel prossimo futuro il miglioramento delle immagini, allargando lo spettro acquisibile, potrebbe offrire numerosi vantaggi in molti settori come quello medico, industriale o militare. Anche grazie a un nuovo sistema capace di acquisire informazioni sui colori superando la nostra capacità visiva di 12 volte, progettato dai ricercatori della University of Granada guidati da Miguel Martinez. I dispositivi che utilizziamo solitamente, come fotocamere digitali, cellulari, e webcam, per […]
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1:30 PM | The Last Word
October 6 – 10 This week was devoted to being Off Our Meds, looking calmly and as rationally as possible at scary issues in medicine. Ebola is about as bad as it gets, and no vaccines or drugs. Guest Robin Mejia suggest we learn some R numbers: “for each day that we’re not effectively isolating […]
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11:30 AM | Undulatus Asperatus
I have been known, over the course of the past few years, to post pictures of the odd cloud or two. And I do mean odd. Sometimes they’re photos I’ve taken myself (and some of which have been very difficult to identify), sometimes they’re from machines in space, and sometimes from humans in space. Still, I’m not a cloud chaser per se; you won’t see me hopping in my car and driving hundreds of kilometers to spy a weird cloud formation someone tweeted about, for […]
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9:00 AM | RASPUTIN: Resolved And unresolved Stellar PopUlaTIoNs
The study of stellar populations is one of the most relevant diagnostics to constrain galaxy formation and evolution. Quantitative analyses of the stellar content of stellar systems pave the way to `convert’  starlight into physical quantities like stellar masses, chemical abundances and star formation rates, and to trace back in time the evolution and the […]
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4:00 AM | East Asia To Italy: Nearly Global VLBI
We are organizing a new meeting to further develop the collaboration between Italy, Japan, and Korea in the field of VLBI. After the successful event in 2012, the new meeting will take place at the CNR research area in Bologna on the 13-14 October 2014. The meeting is organized by INAF/IRA (Istituto di Radioastronomia, Bologna), with […]
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2:08 AM | Images Of The Week (W41-14)
Booooo! The Sun gets an early start on Halloween!! On October 8 active regions on the Sun combined to kinda/sorta form a jack-o-lantern’s face. Folks at NASA’s Goddard Space Flight Center blended together two sets of wavelengths at 171 and 193 Angstroms, typically colorized in gold and yellow, to create this very cool Halloween-ish image. […]

October 10, 2014

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10:00 PM | Trade Secret Theft Arrest Was Illegal.
A judge in New York threw out evidence against former Goldman Sachs programmer Sergey Aleynikov and found that he had been illegally arrested in a trade secret theft case. As I had previously reported, Goldman was ordered to pay over $1.7 million for Aleynikov’s legal fees incurred in connection with the matter. photo by Steven … Continue reading →
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9:20 PM | Spacemen at Work: Astronauts Snap Amazing EVA Photos
On Oct. 7, NASA astronaut Reid Wiseman and European Space Agency astronaut Alexander Gerst ventured outside of the International Space Station to work. And this is their spectacular 'office.'
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8:11 PM | Weekly Space Hangout - 10 Oct 2014
On this episode of the Weekly Space Hangout, I join Fraser Cain and the crew to talk about the origin of water on the Moon, the groundbreaking of the Thirty Meter Telescope, and much more.  Check it out!
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5:00 PM | NASA Mars Missions Prepare for Historic Comet Flyby
A comet will give Mars a historically close shave next weekend, and NASA aims to be ready for the dramatic cosmic event.
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4:00 PM | Too Much Good Stuff Going On This Weekend In SoCal.
I hardly know where to begin, so we will start with the big one. The JPL Open House is back!!!! Yeah!!! If you have youngsters that want to be run over by a Martian rover, or you want to see the place where history is continually made, this is it! Saturday and Sunday 9am to … Continue reading →
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3:38 PM | DNews: Would You Want to Live on Mars?
In honor of Space Week, Trace thought it would be fun to come chat with you all about the plans to colonize Mars!
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3:07 PM | From Mercury orbit, MESSENGER watches a lunar eclipse
Watch as our enormous moon -- a quarter the diameter of the planet -- just winks out as it passes into Earth's long shadow, in an animation captured from more than 100 million kilometers away.
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2:22 PM | Cannabis, cosa dicono 20 anni di studi
Da decenni ormai, esiste un acceso dibattito scientifico sul reale pericolo rappresentato dal consumo ricreativo della Cannabis per la salute. Se alcune questioni sembrano chiare, ad esempio il fatto che un utilizzo abituale può risultare dannoso durante l'adolescenza, quando il nostro organismo è ancora in una fase di crescita, per altre domande invece gli esperti fino ad oggi si sono spesso divisi. La cannabis, ad esempio, può dare dipendenza? Fumare spinelli spinge […]
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2:01 PM | I segreti dei colori delle foglie d'autunno
Arriva l’autunno e, si sa, le foglie si tingono di giallo, rosso e arancione. Ma cos’è che regola questo fenomeno? A spiegarcelo ancora una volta (se le lezioni di scuola fossero ormai un ricordo lontano) oggi è Mark Fischetti in un video su Scientific American, che comincia ricordando come la principale responsabile del cambio di colore delle foglie è la diminuzione delle ore di luce giornaliere. Ma questo è solo l'inizio del cambio di scenografia che […]
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1:13 PM | La scoperta di un nuovo mesone fornisce nuovi indizi per lo studio dell’interazione forte
Un gruppo di fisici guidati dai colleghi dell’Università di Warwick hanno scoperto una particella che contribuirà a fornire una maggiore comprensione dell’interazione forte, una delle quattro forze fondamentali della natura che tiene uniti i protoni del nucleo atomico. Denominata con la sigla Ds3 * (2860) ˉ, si tratta di un nuovo tipo di mesone, cioè un gruppo […]
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1:13 PM | La scoperta di un nuovo mesone fornisce preziosi indizi per lo studio dell’interazione forte
Un gruppo di fisici guidati dai colleghi dell’Università di Warwick hanno scoperto una particella che contribuirà a fornire una maggiore comprensione dell’interazione forte, una delle quattro forze fondamentali della natura che tiene uniti i protoni del nucleo atomico. Denominata con la sigla Ds3 * (2860) ˉ, si tratta di un nuovo tipo di mesone, cioè un gruppo […]
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