Slashdot is powered by your submissions, so send in your scoop

 



Forgot your password?
typodupeerror
×
Space

Big Dipper "Star" Actually a Sextuplet System 88

Theosis sends word that an astronomer at the University of Rochester and his colleagues have made the surprise discovery that Alcor, one of the brightest stars in the Big Dipper, is actually two stars; and it is apparently gravitationally bound to the four-star Mizar system, making the whole group a sextuplet. This would make the Mizar-Alcor sextuplet the second-nearest such system known. The discovery is especially surprising because Alcor is one of the most studied stars in the sky. The Mizar-Alcor system has been involved in many "firsts" in the history of astronomy: "Benedetto Castelli, Galileo's protege and collaborator, first observed with a telescope that Mizar was not a single star in 1617, and Galileo observed it a week after hearing about this from Castelli, and noted it in his notebooks... Those two stars, called Mizar A and Mizar B, together with Alcor, in 1857 became the first binary stars ever photographed through a telescope. In 1890, Mizar A was discovered to itself be a binary, being the first binary to be discovered using spectroscopy. In 1908, spectroscopy revealed that Mizar B was also a pair of stars, making the group the first-known quintuple star system."
Debian

FreeNAS Switching From FreeBSD To Debian Linux 206

dnaumov writes "FreeNAS, a popular, free NAS solution, is moving away from using FreeBSD as its underlying core OS and switching to Debian Linux. Version 0.8 of FreeNAS as well as all further releases are going to be based on Linux, while the FreeBSD-based 0.7 branch of FreeNAS is going into maintenance-only mode, according to main developer Volker Theile. A discussion about the switch, including comments from the developers, can be found on the FreeNAS SourceForge discussion forum. Some users applaud the change, which promises improved hardware compatibility, while others voice concerns regarding the future of their existing setups and lack of ZFS support in Linux."
Communications

Home Phone System That Syncs To Computer? 405

An anonymous reader writes 'In comparison to the advanced technology in today's smart phones, the standard home phone is painfully backwards. My current setup is a Panasonic system that has 4 cordless phones over one base station. Setting the time on one phone changes the time on all the phones; however, this is not the case for the phone book. Each entry must be manually copied (pushed) to each handset. Is this as far as home phone technology has come? What I would like is a phone system that I could sync to my computer so I could update the phone book over all the units (if not sync with Address Book or Outlook), keep a log of caller IDs, or even forward me new voicemail notifications. Does anyone know if such a system exists?'
Quake

Scientists Use Quake 2 To Study the Brains of Mice 185

An anonymous reader writes "In this week's issue of Nature, scientists from Princeton University trained mice to navigate around a virtual environment using a setup that resembles a combination of a giant trackball and a mini-iMax theater displaying a virtual world rendered using a modified version of the Quake 2 open source game engine. (Here's the academic paper, subscription required.) They hold the mouse's head still atop a giant trackball, which the mouse turns by running. The scientists use the rotations to move the mouse around in the virtual environment, and when he reaches certain places, he gets a reward. Because they are able to hold the head still, they can stick microscopic glass electrodes into individual neurons in the hippocampus of this mouse as it 'navigates.' They find the neural activity that resembles activity during real life navigation, and learned new things about the inputs and computations that are going on inside these neurons, which weren't known before. No word as of yet whether the scientists plan on giving the mice control of the gun. Wonder whether John Carmack ever envisioned this when he opened up the Quake code?"
Security

Cyber-criminal Left In Charge of Prison Computer Network 389

samzenpus writes "A 27-year-old man serving six years for stealing £6.5million using forged credit cards over the internet was recruited to help write code needed for the installation of an internal prison TV station. He was left unguarded with unfettered access to the system and produced results that anyone but prison officials could have guessed. He installed a series of passwords on all the machines, shutting down the entire prison computer system. A prison source said, 'It's unbelievable that a criminal convicted of cyber-crime was allowed uncontrolled access to the hard drive. He set up such an elaborate array of passwords it took a specialist company to get it working.'"

Slashdot Top Deals

One man's constant is another man's variable. -- A.J. Perlis

Working...