littlesparkvt writes "One of two official packages of photos of Iran's famed simian space traveler depicted the wrong monkey, but a primate really did fly into space and return safely to Earth, a senior Iranian space official confirmed Saturday. The two different monkeys shown in the photos released by Iran’s state media caused some international observers to wonder whether the monkey had died in space or that the launch didn’t go well."
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ananyo writes "Transistors, the simple switches at the heart of all modern electronics, generally use a tiny voltage to toggle between 'on' and 'off.' The voltage approach is highly reliable and easy to miniaturize, but has its disadvantages. First, keeping the voltage on requires power, which drives up the energy consumption of the microchip. Second, transistors must be hard-wired into the chips and can't be reconfigured, which means computers need dedicated circuitry for all their functions. Now, researchers have made a type of transistor that can be switched with magnetism. The device could cut the power consumption of computers, cell phones and other electronics — and allow chips themselves to be 'reprogrammed' (abstract)."
djl4570 writes "xkcd's 'What If' series consists of humorous takes on highly implausible but oddly interesting hypothetical physics questions, like how to cook a steak with heat from atmospheric re-entry. The most recent entry dealt with flying a Cessna on other planets and moons in the solar system. Mars: 'The tricky thing is that with so little atmosphere, to get any lift, you have to go fast. You need to approach Mach 1 just to get off the ground, and once you get moving, you have so much inertia that it’s hard to change course—if you turn, your plane rotates, but keeps moving in the original direction.' Venus: 'Unfortunately, X-Plane is not capable of simulating the hellish environment near the surface of Venus. But physics calculations give us an idea of what flight there would be like. The upshot is: Your plane would fly pretty well, except it would be on fire the whole time, and then it would stop flying, and then stop being a plane.' There are also a bunch of illustrations for flightpaths on various moons (crashpaths might be more apt), which drew the attention of physics professor Rhett Allain, who explained the math in further detail and provided more accurate paths."
Nerval's Lobster writes "To give the Mars Rover Curiosity the brains she needs to operate took 5 million lines of code. And while the Mars Science Laboratory team froze the code a year before the roaming laboratory landed on August 5, they kept sending software updates to the spacecraft during its 253-day, 352 million-mile flight. In its belly, Curiosity has two computers, a primary and a backup. Fun fact: Apple's iPhone 5 has more processing power than this one-eyed explorer. 'You're carrying more processing power in your pocket than Curiosity,' Ben Cichy, chief flight software engineer, told an audience at this year's MacWorld."
redletterdave points out work from Japanese researchers who produced an incredible visualization of how a brain perceives its environment. Studying zebrafish larvae, the scientists were able to observe neuronal signals in real time as the zebrafish saw and identified is prey, a paramecium. The results are illustrated in a brief video posted to YouTube, and in a longer video abstract hosted at Current Biology. (Direct download). The work is important because it demonstrates direct mapping of external stimuli to internal neuron activity in the optic tectum.
the_newsbeagle writes "Chinese aerospace engineers have revealed, for the first time, details about their Chang'e-2 spacecraft's encounter with the asteroid Toutatis last month. They have plenty to boast: The asteroid flyby wasn't part of the original flight plan, but engineers adapted the mission and navigated the satellite through deep space (PDF). Exactly how close Chang'e-2 came to Toutatis is still unclear. The article states that the first reports 'placed the flyby range at 3.2 km, which was astonishingly—even recklessly—tight. Passing within a few kilometers of an asteroid only 2 to 3 km in diameter at a speed of 10,730 meters per second could be described as either superb shooting or a near disaster.' If the Chinese spacecraft did pass that near, it could provide a "scientific bonanza" with data about the asteroid's mass and composition."
sciencehabit writes "You don't have to be Superman to help those in need, but you might be more willing to do so if you get a taste of his powers. When subjects in a new study strapped on virtual reality helmets, half of them were given the ability to fly around a simulated city, while the others sat passively in helicopters. Some were allowed to merely explore the city from their aerial vantage points; others were told they needed to find a missing diabetic child and deliver his lifesaving insulin. Regardless of which task they performed, the subjects granted the superpower of flight were more likely to help a researcher pick up spilled pens after the experiment was. The results have researchers wondering if our brains might react to the memory of a virtual experience as though it had really happened. If so, we may be able to use virtual reality and gaming to effectively treat psychological disorders such as PTSD."
An anonymous reader writes "Since the 1960s until the present day, missile defense has been a hot topic. Ronald Reagan popularized the concept with his 'Star Wars' multi-billion dollar plan to use lasers and various technologies to destroy incoming Soviet warheads. Today, America has a sizable sea-based system, dubbed AEGIS, that has been deployed to defend against rogue states missiles, both conventional and nuclear. However, there is one thing missile defense can't beat: simple math. 'Think about it — could we someday see a scenario where American forces at sea with a fixed amount of defensive countermeasures face an enemy with large numbers of cruise and ballistic weapons that have the potential to simply overwhelm them? Could a potential adversary fire off older weapons that are not as accurate (PDF), causing a defensive response that exhausts all available missile interceptors so more advanced weapons with better accuracy can deliver the crushing blow? Simply put: does math win?'"
Zothecula writes "A major obstruction to the development of practical 3D microchips is moving data and logic signals from one layer of circuitry to another. This can be done with conventional circuitry, but is quite cumbersome and generates a good deal of heat inside the 3D circuit. Physicists at the University of Cambridge have now developed a spintronic shift register that allows information to be passed between different layers of a 3D microchip. 'To create the microchip, the researchers used an experimental technique called ‘sputtering’. They effectively made a club-sandwich on a silicon chip of cobalt, platinum and ruthenium atoms (abstract). The cobalt and platinum atoms store the digital information in a similar way to how a hard disk drive stores data. The ruthenium atoms act as messengers, communicating that information between neighbouring layers of cobalt and platinum. Each of the layers is only a few atoms thick. They then used a laser technique called MOKE to probe the data content of the different layers. As they switched a magnetic field on and off they saw in the MOKE signal the data climbing layer by layer from the bottom of the chip to the top.'"
anavictoriasaavedra writes "A unique show is taking place on Kamchatka these days: Four separate but nearby volcanoes are erupting simultaneously on the Russian peninsula. A Moscow film crew has produced an awe-inspiring 360-degree video of the natural fireworks." The video is well worth watching and panning around in. There are also a bunch of high-res still photo panoramas.
New submitter Zeussy writes "While looking around Thingiverse for something to 3D-print, I found this awesome public domain prosthetic hand designed for a 5-year-old child called Liam, who was born without any fingers on his right hand. The design is based on parts either 3D-printed or bought from your local hardware store. It's body powered via cables and bungees; see it in action in this video. They are currently running a Fundly Fundraiser."
An anonymous reader writes "Internationally acclaimed architecture firm Foster + Partners built the Hearst Tower, the Millennium Bridge, and the Gherkin here on earth — and now they're setting their sights on outer space with plans to produce a 3D printed building on the moon. Today the firm announced that it has partnered with the European Space Agency to develop a lunar base for four people that can withstand the threat of meteorites, gamma radiation and temperature fluctuations. Since transporting building materials to space is a challenge, the team is considering using on-site 3D printing as a solution."
coondoggie writes "NASA says an asteroid about half the size of a football field will blow past Earth on Feb 15 closer than many man-made satellites. NASA added that while the asteroid, designated 2012 DA14, has no chance of striking Earth. Since regular sky surveys began in the 1990s, astronomers have never seen an object so big come so close to our planet."
sciencehabit writes "A quick visit to Monty Python's Ministry of Silly Walks shows just how many ways humans (or at least British comedians) can think of to travel from point A to point B. So why don't we high kick our way to the bus stop or skip to the grocery store? New research suggests that there may be a deep biomechanical reason governing the gaits we choose in different situations. In short, people consistently choose to walk when they need to travel slower than 2 m/s to reach their goal in the given time; when they needed to move about 3 m/s or faster, they ran. But in between—in 'the twilight zone between walking and running'—people tended to mix the two gaits, minimizing their energy expenditure. The findings could help scientists design better prosthetic limbs and even build more human-like robots"
Lasrick writes "Dawn Stover has another great piece detailing why renewable energy will never provide us with all our energy needs. She deconstructs the unrealistic World Wildlife Fund report (co-written by several solar companies) that claims renewables will be able to provide 100% of the energy needs of several countries by 2050. From the article: 'When renewable energy experts get together, they tend to rhapsodize about the possibilities, believing that this will somehow inspire others to make their visions come true. But ambitious plans to power entire countries on solar energy (or wind or nuclear power, for that matter) don't have a snowball's chance in Australia. Such schemes are doomed to fail, and not because of the economic "reality" or the political "reality" -- however daunting those may be. They are doomed because of the physical reality: It's simply not physically possible for the world's human population to continue growing in numbers, affluence, and energy consumption without trashing the planet.'"