Researcher Jinha Lee at MIT has developed a remarkable way to interact with computers — via a programmable, intelligent and gravity-defying metal ball.
The concept, called “ZeroN”, is demonstrated in the video above. Fascinating!
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Using magnets and computer-controlled motors, ZeroN hovers in mid-air between two control units. Its movements can be pre-programmed or it can react to objects in its environment, and it can apparently “learn” new movements as it is interacted with.
Lee demonstrates how it could be used to control camera positions in 3D applications, and (my favorite) model the motions of planets and stars.
“ZeroN is about liberating materials from the constraints of space and time by blending the physical and digital world,” Lee states on his website.
ZeroN is still in its development stages and obviously needs refining (the 3D camera isn’t much use if the ball is wobbling) but the premise is interesting. I can see something like this being, at the very least, a mesmerizing interactive display for museums, classrooms and multimedia presentations.
Of course, with a little ingenuity a whole world of applications could open up for such a zero-g interface. (I’m sure Tony Stark already has a dozen on pre-order!)
Read more about this on Co.DESIGN (tip of the electromagnetic hat to PopSci.)
The VLT's laser beam creates a "false star" for adaptive optics calibration. (ESO/Y. Beletsky)
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Located high in the mountains of Chile’s Atacama Desert, the enormous telescopes of the European Southern Observatory have been providing astronomers with unprecedented views of the night sky for 50 years. ESO’s suite of telescopes take advantage of the cold, clear air over the Atacama, which is one of the driest places on Earth. But as clear as it is, there is still some turbulence and variations to contend with — especially when peering billions of light-years out into the Universe.
So how do they do it?
Thanks to adaptive optics and advanced laser calibration, ESO can negate the effects of atmospheric turbulence, bringing the distant Universe into focus. It’s an impressive orchestration of innovation and engineering and the ESO team has put together a video to show us how it’s done.
We all love the images (and the science) so here’s a look behind the scenes!
We’ve shared the images and a previous timelapse of Earth’s northern hemisphere, but now here’s a breath-taking timelapse of the entire blue (and green!) marble as seen from Russia’s Elektro-L weather-forecasting satellite, orbiting at a geostationary height of about 36,000 km (22,300 miles). This new video was created by James Drake using some of the largest whole disk images of our planet, as each image is 121 megapixels, and the resolution is 1 kilometer per pixel. The satellite’s wide-angle Multichannel Scanning Unit (MSU) takes images every 15-30 minutes, showing the same viewpoint of Earth across progressive times of the day and the images are in four different wavelengths of light — three visible, and one infrared.
The crew aboard the International Space Station is now back to a compliment of six. New Expedition 31 crew members Gennady Padalka, Joe Acaba and Sergei Revin docked and have now been welcomed on board the ISS after the hatches opened Thursday at 08:10 UTC (4:10 a.m. EDT). They docked to the Poisk module at 4:36 UTC (12:36 a.m. EDT) after a two day journey that began in Baikonur Cosmodrome, Kazakhstan aboard a Soyuz TMA-04M spacecraft. While they’ll be in space for about six months, the new crew members will get right to work preparing for the arrival of the first commercial cargo craft to the ISS. SpaceX’s Dragon is scheduled to launch at 08:55 UTC (4:55 a.m. EDT) this Saturday, May 19, with the Canadarm2 grappling Dragon on May 22, berthing it to the Harmony node.
MIRI, ( Mid InfraRed Instrument ), during ambient temperature alignment testing in RAL Space's clean rooms. Image Credit: STFC/RAL Space
Our friend Will Gater from the BBC’s Sky At Night Magazine had the chance to get a behind-the-scenes tour of the facility that is building the Mid-Infrared Instrument on the long-awaited James Webb Space Telescope. You’ll meet MIRI inside clean room at the Rutherford Appleton Laboratory in the UK, before it is packaged up and sent over to NASA Goddard in the US. You’ll also hear from some of the scientists involved in the project.
MIRI is expected to make important contributions to all four of the primary science themes for JWST: 1.) discovery of the “first light”; 2.) assembly of galaxies: history of star formation, growth of black holes, production of heavy elements; 3.) how stars and planetary systems form; and 4.) evolution of planetary systems and conditions for life.
Lead image caption: MIRI, ( Mid InfraRed Instrument ), during ambient temperature alignment testing in RAL Space’s clean rooms. Image Credit: STFC/RAL Space
Transit of Venus in 2004 by NASA's TRACE spacecraft. Image credit: NASA/LMSAL
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There have been only six Venus transits since the invention of the telescope in the early 17th century. It was not until 1761 that the transit of Venus on June 6th was observed as part of the first ever international scientific observation project, instigated by Edmond Halley. Astronomers across the globe viewed the transit and the differences in their observations were used to triangulate the distance to Venus and, using Kepler’s laws, the distance to the Sun, the other planets and the size of the Solar System. Though the method used has not changed in the 251 years since, the equipment most certainly has.
For this transit, we have technology on our side.
In previous Venus Transits, expeditions were sent out far and wide and the 1761 transit was eventually recorded by 120 individual astronomers from 62 locations across Europe, America, Asia and Africa. They used only the simple telescopes of the day, fitted with dense filters, a pendulum clock to time the transit and quadrants to determine their exact latitude and local time. It is hardly surprising that their observations varied widely. Their calculations put the Sun’s distance between 130 and 158 million kilometres.
Transits happen in pairs. After 121 years a transit occurs followed 8 years later by another, then 105 years pass before the next pair and then the pattern repeats. Prior to the transit of 2004 the most recent transit was in 1882. There were none during the whole of the 20th century! We now approach the last chance to view a transit in our lifetime, the next will not occur until 2117.
Luckily, we’ve got some newly developed technology to help make this the most-observed transit ever!
Astronomers Without Borders are part of the Transit of Venus Project to get as many people around the world to observe the transit and to participate in a collective experiment to measure the Sun’s distance. To this end they have produced the Venus Transit phone app, available to download free for both iTunes and Android. Once downloaded you can start to practice timing the interior contacts of ingress and egress using a simulation of the transit. This is not as easy as it seems, as the black drop effect makes precise timing tricky so practice is definitely recommended. The app will tell you how far out you are so that you can perfect your timing and it will also predict times of contact based on your location together with times of sunrise and sunset.
On the day of the transit, the app will record the exact GPS time and your location, which is sent to the global database. Afterwards you can access your data on the website’s map to edit your entry, and upload descriptions, text, images, or movies and view other entries as well. This transit will be visible over most of the Earth except for parts of West Africa and most of South America, so download, get practicing and become part of a once in a lifetime, global citizen science experiment!
Orbit diagram of asteroid 2012 KU from JPL's Small Body Database website.
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On the heels of a bus-sized asteroid that passed harmlessly between Earth and the orbit of the Moon on May 13, another asteroid between 4.5 and 10 meters (14-33 feet) wide will buzz by at about the same distance on May 17, 2012. Asteroid 2012 KA was discovered just today (May 16), and is projected to make its closest approach about 0.0015 AU, or 224,397 kilometers (134,933 miles, .6 lunar distances) from Earth’s surface at 19:43 UTC on Thursday. The asteroid was discovered by the Mt. Lemmon Observatory, and at the time of this writing, is the only observatory that has made any observations. Therefore JPL lists the uncertainty of the orbit as fairly high (9 out of a 1 to 10 scale) but orbital projections from JPL’s Small Body Database website confirms there is no chance this asteroid would hit Earth. However, most stony meteoroids up to a diameter of about 10-meters are destroyed in thermal explosions by plummeting through Earth’s atmosphere.
We’ll provide any updates as they become available.
Junocam image of the stars that make up the "Big Dipper" asterism
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All right, it may look just like any other picture you’ve ever seen of the Big Dipper. Maybe even a little less impressive, in fact. But, unlike any other picture, this one was taken from 290 million km away by NASA’s Juno spacecraft en route to Jupiter, part of a test of its Junocam instrument! Now that’s something new concerning a very old lineup of stars!
“I can recall as a kid making an imaginary line from the two stars that make up the right side of the Big Dipper’s bowl and extending it upward to find the North Star,” said Scott Bolton, principal investigator of NASA’s Juno mission. “Now, the Big Dipper is helping me make sure the camera aboard Juno is ready to do its job.”
Diagram of the Juno spacecraft (NASA/JPL)
The image is a section of a larger series of scans acquired by Junocam between 20:23 and 20:56 UTC (3:13 to 3:16 PM EST) on March 14, 2012. Still nowhere near Jupiter, the purpose of the imaging exercise was to make sure that Junocam doesn’t create any electromagnetic interference that could disrupt Juno’s other science instruments.
In addition, it allowed the Junocam team at Malin Space Science Systems in San Diego, CA to test the instrument’s Time-Delay Integration (TDI) mode, which allows image stabilization while the spacecraft is in motion.
Because Juno is rotating at about 1 RPM, TDI is crucial to obtaining focused images. The images that make up the full-size series of scans were taken with an exposure time of 0.5 seconds, and yet the stars (brightened above by the imaging team) are still reasonably sharp… which is exactly what the Junocam team was hoping for.
“An amateur astrophotographer wouldn’t be very impressed by these images, but they show that Junocam is correctly aligned and working just as we expected”, said Mike Caplinger, Junocam systems engineer.
As well as the Big Dipper, Junocam also captured other stars and asterisms, such as Vega, Canopus, Regulus and the “False Cross”. (Portions of the imaging swaths were also washed out by sunlight but this was anticipated by the team.)
These images will be used to further calibrate Junocam for operation in the low-light environment around Jupiter, once Juno arrives in July 2016.
Read more about the Junocam test on the MSSS news page here.
As of May 10, Juno was approximately 251 million miles (404 million kilometers) from Earth. Juno has now traveled 380 million miles (612 million kilometers) since its launch on August 5, 2011 and is currently traveling at a velocity of 38,300 miles (61,600 kilometers) per hour relative to the Sun.
New results from NASA's NEOWISE survey find that more potentially hazardous asteroids, or PHAs, are closely aligned with the plane of our solar system than previous models suggested. Image credit: NASA/JPL-Caltech
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There are now 4,700 asteroids out there — plus or minus 1,500 – that are considered Potentially Hazardous Asteroids (PHAs). This is the latest and best assessment yet of our solar system’s population of Near Earth Objects that have the potential to make close Earth approaches. The new results come from data obtained from the asteroid-hunting portion of the now-hibernating WISE mission, called NEOWISE.
And no, these asteroids don’t really want to harm you, but they might. “Potentially Hazardous” does not mean an asteroid will impact the Earth; it only means there is a possibility for such a threat. But only by monitoring these PHAs and updating their orbits with new observations can astronomers better predict the close-approach statistics and their Earth-impact threat. So let’s keep looking.
While previous estimates of PHAs predicted similar numbers, they were rough approximations. NEOWISE has generated a more dependable estimate of the objects’ total numbers and sizes.
“The NEOWISE analysis shows us we’ve made a good start at finding those objects that truly represent an impact hazard to Earth,” said Lindley Johnson, program executive for the NASA’s Near-Earth Object Observation Program. “But we’ve many more to find, and it will take a concerted effort during the next couple of decades to find all of them that could do serious damage or be a mission destination in the future.”
As of today, May 16, 2012, 8,874 Near-Earth objects have been discovered, with about 843 of these NEOs being asteroids with a diameter of approximately 1 kilometer or larger. 1,320 of these discovered NEOs have been classified as PHAs.
PHAs are a subset of the larger group of Near-Earth asteroids, those which have the closest orbits to Earth’s, coming within 8 million kilometers (five million miles) and they are big enough to survive passing through Earth’s atmosphere and cause damage on a regional, or greater, scale.
The WISE spacecraft did not identify and count each of these asteroids. Instead, scientists sampled 107 PHAs to make predictions about the entire population as a whole. Astronomers estimate that so far 20 to 30 percent of these objects have actually been found and cataloged. Last year, the WISE team announced they found there are likely less asteroids that are larger than 100 meters (mid-range sized asteroids) and estimate that with all the surveys combined, 93% of the asteroids larger than 1 kilometer have been found.
This diagram illustrates the differences between orbits of a typical near-Earth asteroid (blue) and a potentially hazardous asteroid, or PHA (orange). Image credit: NASA/JPL-Caltech
The new analysis also suggests that about twice as many PHAs as previously thought are likely to reside in “lower-inclination” orbits, which are more aligned with the plane of Earth’s orbit. These asteroids would be more likely to encounter Earth and therefore be easier to reach. So the new results suggest more near-Earth objects might be available for future robotic or human missions.
See our recent article on computing which asteroids might have the most potential for asteroid mining.
In addition, these lower-inclination objects appear to be somewhat brighter and smaller than the other near-Earth asteroids that spend more time far away from Earth. A possible explanation is that many of the PHAs may have originated from a collision between two asteroids in the main belt lying between Mars and Jupiter. A larger body with a low-inclination orbit may have broken up in the main belt, causing some of the fragments to drift into orbits closer to Earth and eventually become PHAs.
Brighter asteroids may be either stony — like granite — or metallic. This type of information is important in assessing the space rocks’ potential hazards to Earth. The composition of the bodies would affect how quickly they might burn up in our atmosphere if an encounter were to take place.
“NASA’s NEOWISE project, which wasn’t originally planned as part of WISE, has turned out to be a huge bonus,” said Amy Mainzer, NEOWISE principal investigator. “Everything we can learn about these objects helps us understand their origins and fate. Our team was surprised to find the overabundance of low-inclination PHAs. Because they will tend to make more close approaches to Earth, these targets can provide the best opportunities for the next generation of human and robotic exploration.”
The WISE spacecraft scanned the sky twice in infrared light before entering hibernation mode in early 2011. It catalogued hundreds of millions of objects, including super-luminous galaxies, stellar nurseries and closer-to-home asteroids. The NEOWISE project snapped images of about 600 near-Earth asteroids, about 135 of which were new discoveries. Because the telescope detected the infrared light, or heat, of asteroids, it was able to pick up both light and dark objects, resulting in a more representative look at the entire population. The infrared data allowed astronomers to make good measurements of the asteroids’ diameters and when combined with visible light observations, how much sunlight they reflect.
Practice your French counting skills and enjoy a beautiful night launch all in one fell swoop! An Ariane 5 rocket launched last night (May 15 at 22:13 GMT) from Europe’s Spaceport in French Guiana, sending two telecommunications satellites to space. The satellites, JCSAT-13 and Vinasat-2, were successfully and accurately injected into their transfer orbits about 26 minutes and 36 minutes after liftoff, respectively. This was the 62nd Ariane 5 launch, and the second this year. In March, an Ariane 5 rocket sent the ATV-3 “Edoardo Amaldi” to the International Space Station.
