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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.

Continue reading Scientists create simulation of the universe, reenact 14 billion years in a few months (video)

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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.

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Liquid oxygen and kerosene, that’s what fuels China’s new — and freshly tested — rocket engine. When fired up on Sunday, it withstood temperatures as high as 5,432 degrees Fahrenheit (3,000 degrees Celsius) for 200 seconds and powered through almost 20,000 revolutions per minute in a rotational test. “The successful tests confirm the reliability of China’s LOX / kerosene engine,” test commander Lai Daichu told China Daily. According to China Central Television, the engine is non-toxic, pollution-free and the first of its kind for which China holds proprietary intellectual property rights — though similar engines have been used by other space agencies. The engine is on track to lend the upcoming Long March 5 rocket a total of 118 tons of thrust, giving it enough oomph to launch a 25-ton payload into low-earth orbit or 14-ton cargo into geostationary orbit. Its expected to haul additional portions of the country’s space station and aid lunar exploration, but the first voyage isn’t slated until 2014.

[Image Credit: China Aerospace Science and Technology Corporation]

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China’s new liquid oxygen and kerosene-fueled rocket engine lights up for testing originally appeared on Engadget on Tue, 31 Jul 2012 19:57:00 EDT. Please see our terms for use of feeds.

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NASA has already made it clear that the Curiosity’s touchdown on Mars is a nerve-wracking experience, what with the seven minutes of radio silence, zero margin of error and all. To drive that point home, the organization partnered with Microsoft to offer Xbox Live players the experience of controlling the nerve-wracking descent. Starting Monday, you’ll be able to download the free Mars Rover Landing, NASA’s first Xbox Live game. The title uses the Kinect motion controller to simulate the many phases of landing, including dropping the heat shield and deploying the supersonic parachute, with players’ movements controlling the speed and direction of the craft as it approaches the Red Planet. You’ll get three scores — one for each of the landing process — not to mention some newfound appreciation for what employees at the Jet Propulsion Laboratory will be going through on August 5th.

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Mars Rover game hits Xbox Live, tasks you with safely landing the Curiosity with Kinect originally appeared on Engadget on Tue, 17 Jul 2012 03:54:00 EDT. Please see our terms for use of feeds.

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