satellites
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Sound system simulates a rocket blast, would kill you just as dead
Sure, your stereo may go up to 11 and beyond, but you probably couldn't murder your listeners with it. The European Space Agency has a bigger budget, however, and its Large European Acoustic Facility (LEAF) has a 36-foot wide by 54-foot high wall of sound designed to simulate the level of noise during a rocket launch. To be exact, it can produce more than 154 decibels by shooting nitrogen into the horns, which the agency says is the same as standing right next to multiple jets taking off at the same time. It added that "no human being could survive hearing it at maximum output" (presumably because of the overall power), so the walls are epoxy-coated, reinforced concrete. The giant system is designed to stress-test pricey satellites before attaching them to actual rockets, and hopefully avoiding some of the many, many things that can go wrong.
Satellite Safari gives you a unique vantage point for what is in orbit
Satellite Safari is a new iOS app from the creators of Sky Safari. Rather than look at the universe, Satellite Safari has more local ambitions. The app contains a complete database of what is orbiting the earth. It allows you to find what is overhead, then view the spacecraft from earth, from above the earth, or right next to the orbiting satellite with the sun's lighting at the correct orientation. You can easily find what is above you at any time, and try to locate it with binoculars or with the naked eye if the satellite is bright enough. The satellite positions are updated every second, and the position calculations are updated every day. This app packs a lot of power into an iOS device. It's just the thing to have when you are sitting out on our increasingly pleasant spring evenings seeing if you can spot some of the man-made traffic zipping by over our heads. My tests of the app were positive. No crashes, no surprises. Sometimes the animation could be a little jumpy. Lots going on in the background, but I never found it a problem. The app did everything I asked it to do, and worked quickly. Even better, Satellite Safari is the official app of the Sky Cube Mission, which is expected to launch and deploy from the International Space Station in September. When it does, you'll actually be able to request your own images from/of Earth, and even 'broadcast' your own messages from orbit as 'tweets from space.' %Gallery-183678% Like Sky Safari, Satellite Safari not only does good math, but displays its graphics in a compelling way. When you have the orbital view, you can zoom in to see details of the satellite, or rotate the image to see it from any angle. As you rotate, the light and shadows update in a realistic fashion. Satellite Safari is a universal app on sale until April for US$2.99. It's optimized for the iPhone 5 and requires iOS 4.3 or later. A very cool app, which will only become more useful this fall when the SkyCube features ramp up.
Canada's Dextre robot refuels faux satellite from the ISS in first-of-a-kind test
Move over, Canadarm. You may have helped the space shuttle fleet repair the Hubble Telescope and build the International Space Station, but there's another robotic tool that's the apple of the Great White North's eye. Dextre, the Canadian Space Agency's dual-armed mechanical "handyman," has successfully refueled a faux satellite from the ISS as part of NASA's and the CSA's joint Robotic Refueling Mission. Not only did the exercise demonstrate how satellites could be juiced up in space and have their lives extended, but the CSA says it's a first for the history books, to boot. Since 2011, Dextre completed a trio of tests to show how it could service satellites that weren't built for being pried opened in space. Late this week, NASA and CSA robotics controllers removed two safety caps from a washing machine-sized mock satellite, snipped two sets of retaining wires and pumped in a bit of ethanol. Sure, you could take a Frankenstein-like approach and cobble together new satellites from old ones, but Dextre's trials indicate there's promise for a proactive tactic that would keep existing hardware humming.
UK engineers developing harpoon that could help space junk meet a fiery end
Sure, we can pull space junk out of orbit with lasers or use it to cobble together new satellites, but if engineers at space firm Astrium UK have their way, space trash could be disposed of with the help of harpoons. Currently in a conceptual stage, the system is designed to shoot defunct satellites or other debris with a harpoon mounted on a "chaser satellite" and use a tethered propulsion pack to send the rubbish in an atmospheric descent where it'll burn up. Since the projectile could shoot straight through targets and result in even more garbage, it's been fashioned with a crushable portion to reduce its speed upon impact. There's no concrete word on when the outfit's solution might be put in action, but they'll present their work on Wednesday at the 63rd International Astronautical Congress in Naples (Italy, not Florida, mind you). If you can't wait to see the harpoon at work, head past the break to catch tests of an Earth-based prototype.
Inhabitat's Week in Green: solar panel printer, gold producing bacteria and a life-size of horse made of computer keys
Each week our friends at Inhabitat recap the week's most interesting green developments and clean tech news for us -- it's the Week in Green. Inhabitat is always interested in finding innovative uses for old technology, and this week we saw artists and designers from around the world produce new things from old, unused or outmoded gadgets. In Osaka, a local goldfish club has been transforming old phone booths into gigantic public fish tanks. In another large-scale art installation, Babis Panagiotidis used 18,000 recycled computer keys to make a life-size rocking horse. London artist Leonardo Ulian also makes beautiful, ornate mandalas from bits and pieces of old circuitry. And Benjamin Yates makes his unique coffee tables from recycled circuit boards, old VCRs and computer components.
Congo femtocell pilot could spawn DIY mobile networks for isolated communities
It's nice to get a delivery, but what if your remote village could use the contents to finally talk to the rest of the world? That's what African communications company RascomStar-QAF is cooking up with a pilot network in the Congo's jungles. They're going in to villages throughout the African nation and installing 50 router-like femtocells -- normally used in homes for better cellphone access -- from UK vendor ip.access. Those devices will be connected through the ViaSat orbiting network to RascomStar's telecom gateway in the capital, Brazzaville. Since the femtocell setup is nearly automatic, anyone with limited technical knowledge could do it, rather than the team of engineers normally needed for more complex networks. The result would be a system which could be shipped in a box, connecting previously inaccessible areas to a telecom network -- a lot bigger deal than the WiFi veranda project we were thinking of. To see how it'll all come together, connect to the press release below for more details.
NASA READIs early detection GPS network, aids first responders with earthquake warnings
After tacking space shuttle Discovery onto the back of a 747, the brainy gang over at NASA's READI for a new challenge -- earthquake detection. The agency's GPS-monitoring system, known as the Real-time Earthquake Analysis for Disaster Mitigation Network, is being tested with the goal of more accurately detecting the scale of quakes and, consequently, getting tsunami warnings out as soon as possible. The setup, made possible by a partnership between the Department of Defense, the National Science Foundation, and the United States Geological Survey, works by measuring ground displacement in real-time to provide a faster, more detailed assessment of imminent damage, thereby giving first responders a head start on determining aid. So the next time you look up to the night sky and wish upon a tracking star, keep in mind that sometimes privacy-skewing, positioning tech could just save your life.
NASA confirms satellite hacks in Congressional advisory panel
Acknowledging suspicions that two of NASA's earth observation satellites were hacked back in 2007 and 2008, the space agency has indeed confirmed "suspicious events" in a copy of an independent Congressional advisory panel on Chinese / US relations, obtained by Bloomberg News. NASA would not say whether the attacks were organized by the Chinese military as suspected, instead opting to assure the panel that no data was captured or manipulated and that they are working to establish an agency-wide space protection program. According to the report, hackers gained enough access to the Landsat-7 and Terra AM-1 earth mapping satellites to fully command the latter -- choosing not to act on it for unknown reasons. Probably because it'd take an actual rocket scientist in order to do so. Check out the source for more details.
NASA robotic gas station successfully installed -- our Jetsonian dreams (almost) fulfilled
So we won't be zipping around with wife and kids in a flying car anytime soon, but NASA brought us ever closer to a Jetsonian future, yesterday, with the installation of its Robotic Refueling Mission (RRM) experiment. Fifteen minutes into their spacewalk, Mike Fossum and Ron Garan successfully installed the appropriate hardware on the International Space Station for pumping fuel to satellites in space. Using the Canadian-born Dextre (aka Special Purpose Dextrous Manipulator) as a gas station attendant, the RRM will eventually be used to refuel and perform minor repairs to satellites in orbit, potentially extending the time they can stay aloft. Now that that's underway, how 'bout y'all get to work on making Rosie a reality?
Spy satellites become reluctant space celebs, get their own paparazzi
Not only do American military satellites have to put up with the constant threat of ultrasonic space droppings, now they must also suffer the prying lenses of a couple of Frenchmen. Thierry Legault and Emmanuel Rietsch have spent the past two years turning consumer-grade components into a system that can keep up with the zippy and supposedly secret movements of craft like the X-37B space plane and the NROL-49 low-Earth orbit spy sat. Hit the source link and you'll see videos of the International Space Station, which they also managed to capture with steady-ish focus as it hurtled through space-time. Looks like nothing will thwart these guys, except maybe nano-satellites.
In lasers we trust: NASA researches 5kW galactic trash disposal system
Space junk is a growing problem -- 200,000 pieces and counting -- and as the amount of earth's orbital debris increases, so does the chance some satellite will be involved in a cosmic collision. As this would cause much gnashing of teeth and woe for the affected terrestrial parties, some researchers from NASA's Ames Research Center have pitched the idea of moving said junk with a laser -- once again proving that everything's better with lasers. The idea is to use a 5kW ray, likely similar to the one we've got at the Starfire Optical Range, to slow our galactic garbage -- perhaps slowing it down enough to burn it up in earth's atmosphere. Current estimates say such a laser could migrate ten pieces of junk a day, which gives us the promise of a future with neat and tidy skies.
SSTL using Android handsets to control satellites, conquer the final frontier
First, the Mavericks Civilian Space Foundation tested a Nexus One's ability to deal with the stress of a rocket launch. Then, Google floated seven Nexi to the edge of space to see if the phones could cope with the void. Now, Surrey Satellite Technology Limited (SSTL) is looking to launch a satellite into orbit and use a 'droid -- much smaller than the Astromech variety -- to control said satellite. SSTL, who is helping build Galileo (and is acutely aware of its cost, no doubt), views smartphones as a way to democratize access to space because they are far less expensive than purpose-built control systems. The company hasn't said which handset will be used in the satellite, but they chose Android because it allows engineers to easily modify the phone to do their bidding -- from controlling pulse plasma thrusters to handling the advanced guidance and navigation systems of the foot long satellite. Additionally, the open source OS means that they "could get people to develop apps" for the satellite. We've seen plenty of Android apps, but we're really hoping this venture is successful so we get to see apps... in space. [Thanks to everyone who sent this in]
New satellite receiver design teases a glorious, dish-less future
Satellite dishes have come a long way in terms of design and size over the years, but Marcel van de Burgwal -- a grad student at the Netherlands' University of Twente -- has now invented a way to ditch the dish altogether. Channeling his inner Doc Brown, his invention revolves around an array of virtually flat antennas that receive satellite signals without the help of a concave backing. His design also conveniently eliminates the need to physically aim the receiver for reception -- much to the joy of actuaries everywhere. Instead, this task is performed by a network of small basic processors integrated into a single chip, which then bear the heavy calculation work of electronically aiming the receiver. The obvious impact of this design on consumer technology is that satellite receivers could soon make their way into all manner of handheld devices (read: smartphones). In fact, Marcel has already tested the chip's performance as a digital radio receiver for smartphones with successful results. That sounds like great news to us, but we understand if the branding folks at Dish Network are slightly less thrilled. For more details, hit the source link below.
College students help NASA by crashing satellite into the Arctic
Our idea of a great evening in college was listening to some Operation Ivy and drinking a few brews before heading home to secretly pore over A Literature of Their Own. Other college kids, however, have more on their plates than that, such as those who currently work at LASP -- the Laboratory for Atmospheric and Space Physics. LASP is partially staffed by undergraduates at Colorado University, providing a low-cost alternative to more experienced labor, while giving students the kind of hands-on experience not normally available to them. One recent task, for instance, involved the crashing of ICESat, a NASA decommissioned satellite, into the Arctic. Most of it burned up in the atmosphere, while some smaller parts made their way to the Barents Sea. The mission was considered successful and, as for the students who carried it out? Well, let's just say that their nerd credentials are now rock solid.
Solar flares set to wreak havoc on GPS signals
The sun's activity isn't usually a hot topic around these parts, but when it threatens to derail satellite navigation services around the world, it must surely take center stage. UK researchers have corroborated Cornell's 2006 warning that our solar system's main life-giver is about to wake up and head toward a new solar maximum -- a period of elevated surface activity and radiation. It is precisely that radiation, which can be perceived in the form of solar flares, that worries people with respect to GPS signaling, as its effects on the Earth's ionosphere are likely to cause delays in data transmission from satellites to receivers and thereby result in triangulation errors. Still, it's more likely to be "troublesome than dangerous," but inaccuracies of around 10 meters and signal blackouts that could last for hours are being forecast in the absence of any intervening steps being taken. So yes, you now have another reason not to trust your GPS too much. [Thanks, Mike]
European Space Agency launches flood-predicting, earth monitoring satellite
On Sunday (the first of November) the European Space Agency launched a new satellite from a Russian rocket. This one, named the European Soil Moisture and Ocean Salinity (SMOS) satellite has a few very important jobs to do. For the next 3-5 years, the satellite will gather data about the circulation patterns in Earth's oceans and the moisture in its soil. The collected information will hopefully be used to forecast weather patterns such as droughts and flood risks. Check out the video after the break for a detailed explanation and a peek at the satellite of love itself. [Via Inhabitat]
Infrared sensors hit 16 megapixels, can now spy on an entire hemisphere
Aerospace and defense manufacturer Raytheon wants everyone to know it has developed the world's first 16 megapixel infrared sensor, which is set for a life of orbiting the Earth and generally being a lot more useful than lesser models. With its higher resolution, the unit is able to cover an entire half of the planet without "blinking" to relocate its focus, and should be warmly received by meteorologists, astronomists and military types, all craving for a bit more real-time reconnaissance. We advise wide-brimmed tin foil hats to shield your body heat from these Sauron-like satellites while working on those plans for a global uprising of the proletariat. [Via TG Daily]
Satellite watching with GoSatWatch for iPhone
Viewing earth-orbiting satellites, the Space Shuttle, and the International Space Station with the naked eye is a blast. I've been hooked on watching satellites since my folks pointed out Echo-1 to me when I was just 3 years old. Now I find myself looking skyward every time I'm under a dark sky, hoping to catch a glimpse of a tiny light speeding across my field of view. If you're going to try to watch a satellite pass, it helps to know when the shiniest spacecraft are going to be zooming overhead. Amateur radio enthusiasts who want to make AMSAT or ARISS contacts need the same information. There's a cool new iPhone app called GoSatWatch (US$9.99, click opens iTunes) that makes looking for earth-orbiting spacecraft a piece of cake.Once the app is loaded on your iPhone, all you need to do is tap the colorful icon to start the app, then do some initial setup. You should set up your location and allow the iPhone 3G's GPS receiver to determine your local latitude and longitude (iPhone and iPod touch users can enter that information in by hand if desired). More than one observing location can be pre-set in the app.
The Professor: GM's new old engine tech, moon mirrors, the dangers of space war debris
The Professor rounds up a handful of interesting and informative gadget-related science stories from the week and presents them in an easily digestible liquid form. Having trouble keeping your fingers, thumbs, or eyeballs on the pulse of modern science? Do you find yourself in the throes of panic due to misunderstandings in molecular goings-on? Did the latest aircar, split atom, or robotic insectoid go buzzing over your head before you had time to ready a response? Don't worry friends, The Professor is here to help. Though not an actual scientist, professor, or even a college graduate, he can help guide you through the cascading, complicated, and spasmodic visionary vistas of human invention and achievement as smoothly as a hot knife descending into softened butter.
WiMAX could interfere with satellite communications?
Yeah, all those sticky sweet stories about WiMAX actually happening this decade or possibly showing up in a device or two were really getting on our nerves. Now it seems the "little wireless standard that couldn't" is back to form with a report from the Satellite Users Interference Reduction Group (SUIRG). Apparently those folks found "conclusive" results of "unacceptable" levels of interference from WiMAX of satellite signals in the C-band. Naturally, it sounds like this group's primary purpose is to come up with data like this to protect that satellite spectrum turf, but it's disconcerting nonetheless, and we'd love to hear from the WiMAX camp on the issue -- if it comes down to a choice between mobile broadband and a new season of Meerkat Manor in HD, we don't want to be the ones making the hard decisions. [Via New Scientist]