Jun 24
This amazing image shows how messy space can be, as two galaxies collide and deform each other— creating new stars as gas and dust are pushed and pulled in all directions.
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Jun 04
NASA creates eye-popping 160-megapixel image of our two nearest galaxies (video)
Posted in: Today's Chili
NASA is determined to bring the final frontier closer than ever — or at least a small, photographic slice of it. Using NASA’s Swift satellite, astrophysicists at Goddard Space Flight Center and Pennsylvania State University were able to create a stunningly detailed survey of the two galaxies closest to us: the Small and Large Magellanic Clouds. The 160-megapixel image was painstakingly stitched together using thousands of smaller photographs captured with Swift’s Ultraviolet/Optical Telescope. Rendering the galaxies in UV wavelengths allows researchers to study details unseen in visible light images, like individual stars surrounding the Tarantula Nebula in the LMC (the large pink cluster in the photo above). This high-res mosaic provides ample opportunity to study the life cycles of stars, from birth to death, in detail astrophysicists could previously only dream about. Fancy a tour? Check out the video after the break — or journey on past the source link to download the 457MB TIFF.
Source: NASA
Oct 24
You are looking at more than 84 million stars, the largest ever catalogue of the centre of our galaxy, the Milky Way. Astronomers at the Paranal Observatory in Cerro Paranal, Chile, stitched the 9 gigapixels of the original image from thousands of individual infrared pictures.You can see the full, zoomable version here. More »
Oct 05
Australia Square Kilometre Array Pathfinder goes live as the world’s quickest radio telescope
Posted in: Today's Chili 
Australia’s Shire of Murchison is quickly becoming a hotbed for radio telescopes. As of of Friday, the territory is operating the world’s fastest radio telescope in the form of the Australia Square Kilometre Array Pathfinder (ASKAP). The 36-antenna grid’s eventual use of six phased array feeds, each with 188 receivers, will let it scan a field of view 150 times larger than the moon’s visible area while processing that information much faster than a typical single-pixel radio telescope feed — CSIRO estimates that an image of the Centaurus A galaxy that would take 10,000 hours to process with rivals should take five minutes with ASKAP. Ultimately, the array should grow to 60 antennas as part of the Square Kilometer Array, which includes South Africa in its hunt for pulsars, quasars and other unique parts of the universe. Just don’t get your hopes up for booking alien listening sessions anytime soon. Commissioning started virtually as soon as the ribbon was cut, and scientists have already scheduled their usage slots for the next five years. We’re sure we’ll get over any frustration when we see the first ASKAP results published within the next year.
Australia Square Kilometre Array Pathfinder goes live as the world’s quickest radio telescope originally appeared on Engadget on Fri, 05 Oct 2012 11:52:00 EDT. Please see our terms for use of feeds.
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Sep 19
The National Optical Astronomy Observatory (NOAO) puts it into perspective right away: “Eight billion years ago, rays of light from distant galaxies began their long journey to Earth.” It’s important to hold that fact in mind, as we marvel at the first images from deep in the belly of our universe to arrive from the Chile-based Dark Energy Camera (DECam). As that name might suggest, peering at remote galaxies for purely visual gratification isn’t the camera’s primary purpose. The result of eight years of planning and hard work, involving engineers and scientists from three continents, the DECam is mounted on the Victor M. Blanco Telescope at the Cerro Tololo Inter-American Observatory in Chile. Sitting atop a 7,200-foot mountain, the camera is part of the Dark Energy Survey, which intends to gather information on over 300 million galaxies. The goal is to better understand dark energy — a concept that represents our best explanation for why the universe’s rate of expansion is speeding up, rather than slowing due to gravity. Gaze past the break for the background on the project.
Continue reading DECam: Gazing deep into the final frontier in search of dark energy
DECam: Gazing deep into the final frontier in search of dark energy originally appeared on Engadget on Wed, 19 Sep 2012 13:39:00 EDT. Please see our terms for use of feeds.
Permalink | NOAO, Fermilab | Email this | Comments
Aug 17
Scientists create simulation of the universe, reenact 14 billion years in a few months (video)
Posted in: Today's Chili 
Are animations of Curiosity’s Mars landing not enough to feed your space exploration appetite? Try this on for size: a group of scientists from the Harvard-Smithsonian Center for Astrophysics and the Heidelberg Institute for Theoretical Studies have generated what’s billed as a full-fledged simulation of the universe. Arepo, the software behind the sim, took the observed afterglow of the big bang as its only input and sped things up by 14 billion years. The result was a model of the cosmos peppered with realistically depicted galaxies that look like our own and those around us. Previous programs created unseemly blobs of stars instead of the spiral galaxies that were hoped for because they divided space into cubes of fixed size and shape. Arepo’s secret to producing accurate visualizations is its geometry; a grid that moves and flexes to mirror the motions of dark energy, dark matter, gasses and stars. Video playback of the celestial recreation clocks in at just over a minute, but it took Harvard’s 1,024-core Odyssey super computer months to churn out. Next on the group’s docket is tackling larger portions of the universe at a higher resolution. Head past the jump for the video and full press release, or hit the source links below for the nitty-gritty details in the team’s trio of scholarly papers.
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Scientists create simulation of the universe, reenact 14 billion years in a few months (video) originally appeared on Engadget on Fri, 17 Aug 2012 07:09:00 EDT. Please see our terms for use of feeds.
Permalink PhysOrg | Harvard-Smithsonian Center for Astrophysics, Cornell University Library (1), (2), (3) | Email this | Comments
Jul 24
IBM cluster powers Murchison Widefield Array’s radio telescope, answers mysteries of the universe faster than ever (video)
Posted in: Today's Chili 
Radio telescope operators have as much of a problem coping with the avalanche of data as getting that information in the first place. The Victoria University of Wellington is all too aware and is leaning on IBM for a powerful (if very tongue-tying) iDataPlex dx360 M3 compute cluster to sift through the deluge at the upcoming Murchison Widefield Array. Combined, the 4,096 array antennas probing deep space and solar atmospherics will have the Xeon-based cluster tackling signal data to the tune of 8GB per second, and about 50TB per day — that’s a Nexus 7‘s worth of astronomy faster than you can sneeze, folks. A 10Gbps network connection will feed the results to Perth to save scientists a roughly 435-mile trek. Construction is still in mid-stride, but the $51 million Australian ($52.2 million US) being spent on the Murchison array may be worthwhile if it helps solve the riddles of star formation and solar flares.
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IBM cluster powers Murchison Widefield Array’s radio telescope, answers mysteries of the universe faster than ever (video) originally appeared on Engadget on Tue, 24 Jul 2012 20:54:00 EDT. Please see our terms for use of feeds.
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