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Science

Submission + - US's most powerful H-Bomb being dismantled (yahoo.com)

SpuriousLogic writes: AMARILLO, Texas (AP) — The last of the nation's most powerful nuclear bombs — a weapon hundreds of times stronger than the bomb dropped on Hiroshima — is being disassembled nearly half a century after it was put into service at the height of the Cold War.
The final components of the B53 bomb will be broken down Tuesday at the Pantex Plant near Amarillo, the nation's only nuclear weapons assembly and disassembly facility. The completion of the dismantling program is a year ahead of schedule, according to the U.S. Department of Energy's National Nuclear Security Administration, and aligns with President Barack Obama's goal of reducing the number of nuclear weapons.
Thomas D'Agostino, the nuclear administration's chief, called the bomb's elimination a "significant milestone."
First put into service in 1962, when Cold War tensions peaked during the Cuban Missile Crisis, the B53 weighed 10,000 pounds and was the size of a minivan. According to the American Federation of Scientists, it was 600 times more powerful than the atomic bomb dropped on Hiroshima, Japan, at the end of World War II.
The B53 was designed to destroy facilities deep underground, and it was carried by B-52 bombers.
Since it was made using older technology by engineers who have since retired or died, developing a disassembly process took time. Engineers had to develop complex tools and new procedures to ensure safety.
"We knew going in that this was going to be a challenging project, and we put together an outstanding team with all of our partners to develop a way to achieve this objective safely and efficiently," said John Woolery, the plant's general manager.
Many of the B53s were disassembled in the 1980s, but a significant number remained in the U.S. arsenal until they were retired from the stockpile in 1997. Pantex spokesman Greg Cunningham said he couldn't comment on how many of the bombs have been disassembled at the Texas plant.
The weapon is considered dismantled when the roughly 300 pounds of high explosives inside are separated from the special nuclear material, known as the pit. The uranium pits from bombs dismantled at Pantex will be stored on an interim basis at the plant, Cunningham said.
The material and components are then processed, which includes sanitizing, recycling and disposal, the National Nuclear Security Administration said last fall when it announced the Texas plant's role in the B53 dismantling.
The plant will play a large role in similar projects as older weapons are retired from the U.S.'s nuclear arsenal.

Comment I'm thinking no (Score 4, Interesting) 265

I'll be blunt: I'm not buying it. I give details on my blog, but I think there are too many holes in the idea. For one thing, comets aren't that small; passing within a few thousand klicks of one would put us inside the debris field. We'd have seen vast numbers of meteors. For another, no one else saw it? At all? Comets can be visible during broad daylight - I've seen one myself - yet there's not a single other observation of a comet that close from any other person on Earth. So I am very, very, very skeptical.
Science

Submission + - FTL neutrinos explained... maybe (arxiv.org)

The Bad Astronomer writes: "A new paper, recently posted on the arXiv physics preprint server, claims to have explained the FTL neutrino experiment from last month. The author claims the motion of the GPS satellite introduces a relativistic dilation that accounts for the now-infamous 60 ns discrepancy in neutrino flight time. However, I'm not so sure; the original experimenters claimed to have accounted for relativistic effects. I don't think we've seen the end of this just yet."
Space

Submission + - Astronomers find three exoplanets in old Hubble im (discovermagazine.com) 1

The Bad Astronomer writes: "Using new software techniques on Hubble data from 1998, astronomers have teased out direct images of three planets orbiting the Sun-like star HR 8799, 130 light years away. These planets were discovered in 2008 using a different telescope, but had been sitting in the Hubble pictures this whole time, invisible due to their proximity to the bright star. Many other images of other stars are available, so it's entirely possible more planets will be found in this way."
Space

Submission + - 1/3 of Sun-like stars may have warm Earth analogs (arxiv.org)

The Bad Astronomer writes: "An astronomer studying data from the first 136 days of the Kepler observatory missions has calculated that as many as 34% of all Sun-like stars may have Earth-sized planets orbiting in their habitable zones, where conditions are right for life as we know it. I have some reservations with his numbers, but they do match other studies. There may be 15 billion warm, Earth-sized worlds in our galaxy alone."
Android

Submission + - How Google Drove Samsung Away (itworld.com)

itwbennett writes: "The patent licensing agreement between Microsoft and Samsung this week set off a firestorm of childish tit-for-tat between Microsoft and Google. But more telling is what Samsung had to say about its relationship with Google: 'Samsung knows it can't rely on Google. We've decided to address Android IP issues on our own,' a Samsung official told The Korea Times. The only good news to come from all of this, says blogger Brian Proffitt, is that we may be headed for a courtroom showdown over just what patents Microsoft believes are in violation, which really is what should have happened to begin with."
Chrome

Submission + - 25% of Google Chrome Extensions Allow Data Theft (net-security.org)

Orome1 writes: 27 of a 100 tested Google Chrome extensions have been found vulnerable to data (passwords, history, etc.) extraction attacks though specially crafted malicious websites or by attackers on public WiFi networks. A trio of security researchers have manually analyzed 50 of the most popular Chrome extensions and added to that list 50 more chosen by random. "We looked for JavaScript injection vulnerabilities in the cores of the extensions (the background, popup, and options pages); script injection into a core allows the complete takeover of an extension," explained Adrienne Porter Felt, one of the researchers. To prove their claim, they performed PoC attacks devised to take advantage of the vulnerabilities.
Cloud

Submission + - US Congressmen Ask FTC To Investigate Facebook

An anonymous reader writes: Two US congressmen today asked the Federal Trade Commission (FTC) to investigate recent accusations that Facebook tracks its users even after they log out of the social network, an issue the company says it has since fixed. Edward Markey, a Massachusetts Democrat, and Joe Barton, a Texas Republican, want the FTC to take a closer look at Facebook’s business practices.
NASA

Submission + - Stunning time lapse of the Earth from the ISS (youtube.com)

The Bad Astronomer writes: "Science educator James Drake took 600 still photos from the International Space Station as it orbited the Earth, and created a fantastic time-lapse animation out of them. It must be seen to be appreciated; storms and cities fly past below in amazing clarity. I found this via Universe Today and added some commentary on my blog as well."
It's funny.  Laugh.

Journal Journal: sickipedia.org 4

sample
Hitler wasn't such a bad guy.
After all, he did kill Hitler.

Dear, I don't think you should be watching Spongebob...
Why, Mom?
Well, he is super absorbent and lives in bikini bottom...
And?
Dear, Spongebob is a tampon.

Tim Cook in charge of Apple? Wait for the headlines....
''Cook promises to improve Apple turnover''.

Space

Submission + - Are Small Rocky Worlds Naked Gas Giants? (discovery.com)

astroengine writes: "The "core accretion" model for planetary creation has been challenged (or, at least, modified) by a new theory from University of Leicester astrophysicists Seung-Hoon Cha and Sergei Nayakshin. Rather than small rocky worlds being built "bottom-up" (i.e. the size of a planet depends on the amount of material available), perhaps they were once the cores of massive gas giant planets that had their thick atmospheres stripped after drifting too close to their parent stars? This "top-down" mechanism may also help explain how smaller worlds were formed far from their stars only to drift inward toward the habitable zone."
Chrome

Submission + - Google Chrome Hits 25% Market Share (conceivablytech.com)

An anonymous reader writes: Google’s Chrome browser is picking up the pace after a slight market share growth slowdown in August. Chrome has cracked the 25% mark for the first time this weekend, according to StatCounter. Firefox share is declining five times faster than IE share.
NASA

Submission + - To Boldly Go Nowhere (theatlantic.com)

ColdWetDog writes: A brief note in the Atlantic notes that Congress has failed to supply funds to continue Plutonium-238 production, needed for radioisotope generators for NASA's interplanetary probe programs. No PU-238 means no more missions like Cassini-Huygens and pretty much anywhere that the sun doesn't shine enough to power the satellite via solar cells.

The article notes that the only other source of PU-238 is Russia — either through the government or through trolling through Siberia and the Russian coastline looking for old Soviet Era lighthouses and power stations.

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