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4 items tagged "space"
Slashdot: IT
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SETI@Home Install Leads To School Tech Supervisor's Resignation
Posted: December 2nd, 2009, 9:40pm CET by timothy
Tags: space
An anonymous reader writes "Apparently the most prolific of users in the SETI@Home community has resigned his job as a school technology supervisor after it was revealed he had the software installed on some 5000 school machines. The school claims to have lost $1 million in upkeep on the affected machines." -
How They Built the Software of Apollo 11
Posted: July 21st, 2009, 2:08pm CEST by kdawson
Tags: space
LinuxScribe tips a piece up at Linux.com with inside details on the design and construction of the Apollo 11 code. There are some analogies to open source development but they are slim. MIT drafted the code — to run on the Apollo Guidance Computer, a device with less grunt than an IBM XT — it had 2K of memory and a 1-MHz clock speed. It was an amazing machine for its time. NASA engineers tested, polished, simulated, and refined the code. "The software was programmed on IBM punch cards. They had 80-columns and were 'assembled' to instruction binary on mainframes... and it took hours. ... During the mission, most of the software code couldn't be changed because it was hard-coded into the hardware, like ROM today... But during pre-launch design simulations, problems that came up in the code could sometimes be finessed by... computer engineers using a small amount of erasable memory that was available for the programs. The software used a low-level assembly language and was controlled using pairs or segments of numbers entered into a square-shaped, numeric-only keyboard called a Display and Keyboard Unit... The two-digit codes stood for 'nouns' or 'verbs,' and were used to enter commands or data, such as spacecraft docking angles or time spans for operations." Reader Smark adds, "The Google Code Blog announced today that the Virtual AGC and AGS project has transcribed the Command Module and Lunar Excursion Module code used during the Apollo 11 moon landing. The code is viewable at the VirtualAGC Google Code Page."Read more of this story at Slashdot.
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Computer Virus Aboard the ISS
Posted: August 27th, 2008, 2:54pm CEST by timothy
Tags: space
chrb writes "BBC News is reporting that laptops taken to the International Space Station by NASA astronauts are infected with the Gammima.AG worm. The laptops have no net connection; officials suspect the worm may have been transferred via a USB flash drive owned by an astronaut. NASA have said this isn't the first time computer viruses had travelled into space."Read more of this story at Slashdot.
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Tracking Near-Earth Meteors With a 1.1 Petabyte Database
Posted: August 9th, 2008, 2:05am CEST by Soulskill
Tags: space
Lucas123 writes "The latest and most ambitious attempt to detect 'near-Earth objects' (NEOs) is the Panoramic Survey Telescope and Rapid Response System, or Pan-STARRS. When it's fully operational several years from now, it will have four telescopes, each with a 1.4-gigapixel camera. The system is expected to be able to track virtually all NEOs larger than 300 meters in diameter as well as many smaller ones. Rather than turning to an expensive supercomputer equipped with hundreds or thousands of processors, Pan-STARRS will use a cluster of 50 PC servers connected to 1.1 petabytes of disk storage via fast Infiniband networking gear."Read more of this story at Slashdot.