Posts

August 21, 2014

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2:37 PM | Cosmic Minute: Black Holes, Other Universes, and the Mystery of Dark Matter
Did you know dark matter accounts for 85 percent of our gravity? Neil deGrasse Tyson, host of StarTalk Radio, illuminates us on black holes that may lead to other universes, and the common mysteries of dark matter and energy that have a huge hand to play in the way our own universe works. If you like this track (and want more of an explanation and context for Neil’s use of the word “Rebecca”), be sure to check out the whole “Through the Wormhole” episode where […]
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12:48 PM | Stardust@home Finds Some Stardust
What’s new at Stardust@home, the groundbreaking program that asked volunteers to help find interstellar dust particles collected by the spacecraft Stardust.
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12:25 PM | Nanotubi che sembrano cactus
Direttamente dagli Swiss Federal Laboratories for Materials Science and Technology di Dubendorg arriva la descrizione di una tecnica di fabbricazione che potrebbe permettere di realizzare nanotubi (ossia tubi microscopici, dell'ordine di grandezza dei nanometri) di carbonio a parete singola, realizzati cioè a partire da un singolo foglio di atomi di carbonio avvolto su se stesso. Questi particolari nanotubi presenterebbero caratteristiche che li renderebbero utilizzabili in vari campi, […]
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12:00 PM | Dating a Star ... a Few Hundred Thousand, in Fact
Globular clusters are too cool. For one thing, they’re gorgeous. I have proof! That is IC 4499, a tight ball of tens or hundreds of thousands of stars located roughly 60,000 light years away. This image was taken by Hubble, and besides being spectacular, it also was used to nail down the age of the cluster, which until recently has been a bit controversial. This is another reason globulars are cool … Getting the age of the cluster is possible because globulars have a very helpful […]
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12:00 PM | Sea Plankton on Space Station, Russian Official Claims
A Russian official claims that samples collected by cosmonauts show evidence of sea plankton on the outside of the International Space Station
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11:30 AM | Aug 21st: The Minus-Third Anniversary of the 2017 US-Crossing Total Solar Eclipse
Podcaster: Jay Pasachoff
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10:50 AM | Week 13: Crossing the Continental Divide
The Wyoming Infrared Observatory atop Mt. Jelm. All photos by the author. Ever wonder where east meets west, geographically speaking? This past week saw us hitting the road once again and crossing the great state of Wyoming, nicking Montana for a couple nights, and then entering the state of Idaho for the first time. An [...]
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8:23 AM | DNews: Astronauts Resort to Pills to Get Some Shut-Eye
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8:00 AM | Fracking the Great White North
In 1945, Canadian homes were still heated either by coal or by wood. My grandparents had shivered through depression-era Ottawa winters, desperate for fuel. Now the War was over, and fortunes were to be made, but to avoid flooding the housing and labour markets, the Canadian military didn’t demob everyone at once. This left my […]
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7:40 AM | Week 13: Crossing the Continental Divide
The Wyoming Infrared Observatory atop Mt. Jelm. All photos by the author. Ever wonder where east meets west, geographically speaking? This past week saw us hitting the road once again and crossing the great state of Wyoming, nicking Montana for a couple nights, and then entering the state of Idaho for the first time. An [...]
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7:14 AM | Scientists and Social Networks
A recent article by Richard Van Noorden summarizes the results of a survey done by Nature to understand how scientists use social networks. The results are interesting: scientists use some networks like ResearchGate, LinkedIn, Academia.edu, and Mendeley, mainly to share their works, to contact and discover peers, to discover new papers. Twitter is used to exchange words on research, while Facebook is most for personal things, not related to work. I had more or less the same thoughts from my […]
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7:00 AM | Nuovi indizi sul processo di produzione dei fotoni nelle collisioni di alta energia
Sappiamo che il nucleo dell’atomo è composto da protoni e neutroni che, a loro volta, sono costituiti da particelle più elementari chiamate quark e gluoni. Osservare queste particelle elementari è alquanto complicato e allora i fisici utilizzano i grandi acceleratori per far scontrare gli atomi alla velocità della luce e vedere cosa accade durante le […]
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12:58 AM | The Physics of a New Generation (Synopsis)
“You suddenly realize that you and your colleagues know something that no one else does… and that it is important. You’re lucky if it happens once in a lifetime. I’ve been super-lucky.” -Leon Lederman It’s the holy grail of modern particle physics: discovering the first smoking-gun, direct evidence for physics beyond the Standard Model. Sure, there…
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12:58 AM | The Physics of a New Generation
How a fundamental but unstable particle might be our first window into particle physics beyond the Standard Model.Continue reading on Medium »

August 20, 2014

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10:00 PM | Musicians Oppose Copyright Laws Changes on Sampling
Aerosmith lead singer Steve Tyler has spoken out against a proposed change in US copyright law that would require musicians to let others create derivative works of their songs. These derivative works would include samples, mash-ups, and remixes. Unauthorized sampling is common in the music industry. Record Label TufAmerica Inc. recently filed a copyright infringement … Continue reading →
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7:57 PM | Linux Foundation Announces New Linux Certification Program | The Linux Foundation
New program will help expand global talent pool of experienced Linux pros and offer the first fully virtual, performance-based, distribution-flexible certification exam Chicago, Ill. LINUXCON & CLOUDOPEN, August 20, 2014 – The Linux Foundation, the nonprofit organization dedicated to accelerating the growth of Linux and collaborative development, today is announcing a new Linux Foundation Certification…Read more →
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4:02 PM | Canadian Mars Analogue Mission: Field Report, Week 1
Tanya Harrison reports on Canada's efforts to simulate a Mars sample return mission here on Earth.
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4:00 PM | I Can See Clearly Now.
DigitalGlobe company has launched the most powerful commercial imager ever built, the WorldView-3 Earth into orbit. DigitalGlobe’s images are used by Google and Bing maps, along with a host of other military and civilian applications. The WorldView-3 spacecraft has an astonishing 1.2 inches (31cm) resolution. The US Department of Commerce has restricted the distribution of … Continue reading →
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3:45 PM | Our Curiosity
I haven’t written about our laser-eyed nuclear-powered red-planet roaming friend in a while. But the Curiosity rover recently celebrated its second year on Mars (which is really just over one Martian year on Mars). It’s still rolling along—literally—heading for its ultimate target: Aeolis Mons, aka Mount Sharp, the 5.5 kilometer-high peak in the center of Gale Crater, Curiosity's landing site. Of course, it’s finding a lot of fun souvenirs along the way, and doing […]
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3:29 PM | Globular clusters and stellar archaeology: Hubble views IC 4499
Stellar archaeology is a new term which has come into use to describe various new findings which show that the existence of multiple generations of stars may be recognised using careful measurements of stellar observables and subsequent comparison with modern computer-generated models that take into account all the complex underlying physics of stellar atmospheres. Globular clusters […]
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3:00 PM | Clue Found to How Black Holes Form
A recent discovery of an intermediate-mass black hole in a nearby galaxy offers the best evidence yet that a class of medium-size black holes exists.
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2:59 PM | Sei narcisista? Per scoprirlo basta rispondere
“Io sono un narcisista (Nota: la parola “narcisista” indica una persona egoista, egocentrica e vanesia)”. È sufficiente indicare su una scala a sette punti quanto questa semplice affermazione sia vera per noi per completare il Sins (Single Item Narcissism Scale), un esame che valuta il livello di narcisismo di una persona attraverso un'unica domanda. Un test rapido, è vero, ma estremamente preciso. Uno studio pubblicato su Plos One, che descrive 11 […]
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2:54 PM | My favorite dark matter candidate
Roughly 85% of the mass in the Universe isn’t made of electrons, atoms, and so forth: it’s not the stuff familiar from daily life. The name we give our ignorance is dark matter, which we suspect is made of a particle of some type. We see its effects in the motion of stars and gas […]
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12:00 PM | Did I Say 30 Billion Tons of CO2 a Year? I Meant 40.
Every now and again a global warming denier will say that humans aren’t putting much carbon dioxide into the air, and it’s less than a lot of natural sources. I’ve pointed out that in fact, humans throw about 30 billion tons of it into the atmosphere every year, 100 times as much as volcanoes do. I got that number from a paper published a few years back. Well, I just found out that paper is out of date. Guesss what the more accurate, current number for the human-made CO2 […]
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11:30 AM | Aug20th: News From the 126th Meeting of the Astronomical Society of the Pacific
Podcaster: Nicole Gugliucci & Georgia Bracey
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10:01 AM | Staring into a Seething Nest of Massive Stars
Astronomers have gotten an unprecedented look into two beautiful stellar nurseries, revealing a dramatic display of glowing gases and some of the most massive -- and violent -- stars in the Milky Way. Continue reading →
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8:00 AM | Guest Post: Dorothy, Maggie, Science, Politics, & Metaphor
About a year ago I sat in the Members’ Room at the Royal Society as Professor Judith Howard FRS, once a doctoral student of Dorothy Hodgkin’s explained how crystallographers worked in the early days. She showed me how Dorothy would begin by calibrating the black circles in an X-ray diffraction pattern by eye, to begin […]
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8:00 AM | Guest Post: Writing a Relationship
About a year ago I sat in the Members’ Room at the Royal Society as Professor Judith Howard FRS, once a doctoral student of Dorothy Hodgkin’s explained how crystallographers worked in the early days. She showed me how Dorothy would begin by calibrating the black circles in an X-ray diffraction pattern by eye, to begin […]
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7:00 AM | La morte di tre stelle a causa dei buchi neri supermassicci
Alcuni ricercatori del MIPT e dello Space Research Institute della Russian Academy of Sciences hanno pubblicato un lavoro dove riportano una serie di dati, ottenuti con i satelliti ROSAT e XMM-Newton, relativi alla distruzione di alcune stelle a causa dei buchi neri supermassicci che risiedono nei nuclei delle galassie attive. Una stella passa molto vicina ad […]

August 19, 2014

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10:30 PM | Space Plane Tech Could Power Aircraft for US Military
Engine technology being developed for a British space plane could also find its way into hypersonic aircraft built by the U.S. military.
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