Peter writes to tell us about a research group at the University of Sydney in Australia, who in the middle of some calculation wanted to check the numbers everybody uses for the thickness of our galaxy at the core. Using data available freely on the Internet and analyzing it in a spreadsheet, they discovered in a matter of hours that the Milky Way is 12,000 light years thick, vs. the 6,000 that had been the consensus number for some time.

arktemplar suggests Technology Review for their annual list of 10 emerging technologies that the editors believe will be particularly important over the next few years. Quoting: "This is work ready to emerge from the lab, in a broad range of areas: energy, computer hardware and software, biological imaging, social interactions. Two of the technologies — cellulolytic enzymes and atomic magnetometers — are efforts by leading scientists to solve critical problems, while five — surprise modeling, connectomics, probabilistic CMOS, reality mining, and offline Web applications — represent whole new ways of looking at problems. And three — graphene transistors, nanoradio, and wireless power — are amazing feats of engineering that have created something entirely new."

mlimber writes "The NYTimes has up a story about the discovery of a solar system that is analogous to ours. Of the 250 or so exoplanets found thus far, 'few of them are in systems that even faintly resemble our own. In many cases, giant Jupiter-like planets are whizzing around inside the orbit of Mercury,' whereas in this new system, 'a planet about two-thirds of the mass of Jupiter and another about 90 percent of the mass of Saturn are orbiting a reddish star about half the mass of the Sun, at about half the distances that Jupiter and Saturn circle our own Sun.' The researchers used gravitational microlensing to detect the planets, and two of the lead authors of the paper to be published in Science are amateur astronomers, one of whom describes herself as 'an ordinary New Zealand mother.'"

twitter wrote to mention that the TSA (Transport Security Administration) has released a new set of proposed rules that is raising quite a stir among groups ranging from the ACLU to the American Society of Travel Agents. Under the new rules airlines would be required to submit a passenger manifest (including full name, sex, date of birth, and redress number) for all flights departing, arriving, or flying over the United States at least 72 hours prior to departure. Boarding passes will only be issued to those passengers that have been cleared. "Hasbrouck submitted that requiring clearance in order to travel violates the US First Amendment right of assembly, the central claim in John Gilmore's case against the US government over the requirement to show photo ID for domestic travel. [...] ACLU's Barry Steinhardt quoted press reports of 500,000 to 750,000 people on the watch list (of which the no-fly list is a subset). 'If there are that many terrorists in the US, we'd all be dead.' TSA representative Kip Hawley noted that the list has been carefully investigated and halved over the last year. 'Half of grossly bloated is still bloated,' Steinhardt replied."

GrumpySimon writes "New research indicates that subliminal messages may actually work. In a paper titled Attentional Load Modulates Responses of Human Primary Visual Cortex to Invisible Stimuli, Bahrani et al. demonstrate that even though stimuli may not be available to consciousness, they are processed by the visual cortex. While I'm sure that marketing agencies all over the world are rubbing their hands in glee at this news, the authors report that there's no evidence that this can make people buy things against their will. So with any luck the use of subliminal messages in advertising will remain an urban legend."