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Comment Attitude Control (Score 3, Interesting) 150

Noting that accurate pointing of on-board sensors is vital for most Earth and astronautical observations, I'd be interested to read about the precision and accuracy of the attitude control system. The A-train satellites are each the size of a Ford van and have multiple spinning wheels, torquers, star trackers and gyros to sense the spacecraft attitude and maintain the correct orientation. Using only mag rods, nulling any residual attitude errors will take quite a while and I'm not sure you'd ever have a 'stable' platform.
Space

Expensive U.S. Spy Satellite Not Working 251

Penguinshit writes to mention a Reuters article about some trouble the U.S. is having communicating with a spy satellite. The sensor package was launched last year by the U.S. National Reconnaissance Office, and is worth hundreds of millions of dollars. It has apparently hung in a low orbit for months now, and efforts to communicate with it have been unsuccessful. From the article: "The official said the problems were substantial and involved multiple systems, adding that U.S. officials were working to reestablish contact with the satellite because of the importance of the new technology it was meant to test and demonstrate. The other source said the satellite had been described to him as 'a comprehensive failure.' There was no suggestion by either of the sources that the satellite had been purposely damaged as part of a terrorist attack. Another government official said he had no information about any attacks on U.S. satellites."

FreeBSD 6.1 Released 227

nbritton writes "FreeBSD 6.1 has been released! This release is the next step in the development of the 6.X branch, delivering several performance improvements, many bugfixes, and a few new features. Of note are the major improvements to the filesystem and SATA code, possibly making FreeBSD the number one choice for SATA RAID implementations. For a complete list of new features and known problems, please see the release notes, errata list, Bittorrent Downloads, Mirrors, Hardware Notes, and Installation Guide."

Tearing Down China's Great Firewall 410

quadsoft writes to tell us The Toronto Star has a look at three University Toronto computer geeks who are working hard to circumvent the internet censorship problems like those found in China. From the article: "But the computer smarts of Ron Deibert, Nart Villeneuve, and Michael Hull, combined with their passion for politics and free expression, have led them to develop a highly anticipated software program that allows Internet users inside China and other countries, such as Iran, Saudi Arabia and Burma, to get around repressive censorship and not get caught."

Bird Flu Drug Mass Production Technique Discovered 252

creepygeek writes to mention a New Scientist article detailing a new process for creating Tamiflu, an antiviral drug currently thought to be our best defense against the bird flu. From the article: "Making Tamiflu is slow, partly because shikimic is hard to get, but also because one step in the process involves a highly explosive chemical called an azide. As a result, Tamiflu can be made only in small batches of a few tens of litres at a time. But Elias Corey of Harvard University - who won a Nobel prize in 1990 for chemical synthesis - and colleagues have devised a new way to make the drug from two cheap, plentiful petrochemicals, acrylate and butadiene."

How IBM Out-foxed Intel With The Xbox 360 327

xcaverx writes "Learning from failure is a hallmark of the technology business. Nick Baker, a 37-year-old system architect at Microsoft, knows that well. A British transplant at the software giant's Silicon Valley campus, he went from failed project to failed project in his career. He worked on such dogs as Apple Computer's defunct video card business, 3DO's failed game consoles, a chip startup that screwed up a deal with Nintendo, the never successful WebTV and Microsoft's canceled Ultimate TV satellite TV recorder. But Baker finally has a hot seller with the Xbox 360, Microsoft's video game console launched worldwide last holiday season."

Cringely Posits Adobe's Purchase by Apple 245

An anonymous reader writes to mention another Robert Cringely piece discussing Apple's future. In his latest article, he lays out some goals for Apple on its quest to desktop dominance. An important link in this chain is Apple's purchase of Adobe Systems. From the article: "Adobe has already made one feint away from Mac development that required personal pressure from Steve Jobs on John Warnock to reverse. If Apple kinda-sorta embraces Windows enough for Adobe to question whether continued development for the native OS X platform is still warranted, well, then Apple WILL just become another Dell, which isn't what Steve Jobs wants. Steve wants Windows applications to run like crazy on his hybrid platform but to look like crap. In his heart of hearts, he'd still like to beat Microsoft on the merits, not just by leveraging some clever loophole. So he needs the top ISVs who are currently writing for OS X to continue writing for OS X, and that especially means Adobe."
Microsoft

Microsoft Offers Phone Support For IE 7 195

An anonymous reader writes "The BBC is running a short piece detailing Microsoft's newest step in testing Internet Explorer 7, which just went into Beta 2 yesterday. They're now offering free phone support to U.S., German, and Japanese users who try out the trial software." From the article: "'We believe that IE 7, even at this beta stage, is a significant improvement and we want as many people as possible to try it and use it,' said the browser development team in a post on its blog. 'IE 7 is feature complete and has been through significant compatibility and reliability testing. People (especially technology enthusiasts) will have a good experience with it,' continued the post. Microsoft said the new version addresses some problems affecting banking and news sites. It is also designed to be more secure than the current version, with built-in protection against malicious software and online phishing scams."

Apple Dumps PortalPlayer Chip 147

Quash writes to mention a BusinessWeek article about Apple's decision to not use the PortalPlayer chip in a future version of the iPod nano. From the article: "PortalPlayer stock promptly shed $9.46, or nearly 42% of its value, and more than $220 million in market value. Apple generally doesn't discuss future products, nor its manufacturing or component supply strategies. It had no comment on the matter. But theories about who may have been the beneficiary of PortalPlayer's misfortune are abounding."

Sudo vs. Root 327

lessthan0 writes "In Mac OS X, the root account is disabled by default. The first user account created is added to the admin group and that user can use the sudo command to execute other commands as root. The conventional wisdom is that sudo is the most secure way to run root commands, but a closer look reveals a picture that is not so clear." The article is about OSX but the debate is a little older ;)

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