Astronomers have measured all the light from all the stars that have ever existed. "In total, the astronomers estimate, stars have radiated 4x1084 photons (a photon being the smallest unit of light)," reports The Guardian. "Or put another way: 4,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 photons." From the report: The astronomers based their calculation on measurements of the extragalactic background light (EBL), a cosmic fog of radiation that has been accumulating since stars first illuminated the dark, vast expanse of space. More than 90% of starlight ends up surviving in this dim backdrop of radiation. The latest observations, collected over nine years by Nasa's Fermi space telescope, use the light from blazars -- super-massive black holes that emit powerful jets of gamma rays -- as beacons to illuminate the cosmic fog.

In total, the team captured signals from 739 blazars -- some relatively close and some extremely distant, whose light was emitted in the ancient universe and has taken billions of years to arrive at Earth. Gamma-ray photons travelling through a fog of starlight have a high chance of being absorbed. So by taking blazars at different distances from the Earth and working out how much of their radiation had been lost along the way, the total starlight at different time periods could be ascertained. The researchers used a computer model to factor in the cosmic fog, which "is simultaneously being diluted as the universe expands and space itself is stretched out," the report mentions. "The measurements suggest that star formation peaked about 11 billion years ago and has been on the wane ever since. About seven new stars are created in our Milky Way galaxy every year."

diegocg quotes Kernel Newbies: Linux 4.11 has been released. This release adds support for bigger memory limits in x86 hardware (128PiB of virtual address space, 4PiB of physical address space); support for AMD Secure Memory Encryption; a new unwinder that provides better kernel traces and a smaller kernel size; support for the zstd compression algorithm has been added to Btrfs and Squashfs; support for zero-copy of data from user memory to sockets; support for Heterogeneous Memory Management that will be needed in future GPUs; better cpufreq behaviour in some corner cases; faster TBL flushing by using the PCID instruction; asynchronous non-blocking buffered reads; and many new drivers and other improvements.
Phoronix has more on the changes in Linux 4.14 -- and notes that its codename is still "Fearless Coyote."

Electric car maker Tesla says its keenly awaited Model 3 car for the masses will go on sale on Friday. From a AP report: CEO Elon Musk made the announcement Monday on Twitter. The car is to start around $35,000 and with a $7,500 federal electric car tax credit, could cost $27,500. Tesla says the five-seat car will be able to go 133 miles (215 kilometers) on a single charge and will be sporty, accelerating from zero to 60 miles per hour in under six seconds. Editor's note: the article was updated after the Associated Press, the original source, updated its report.

The Office of the Privacy Commissioner of Canada said Tuesday that the Canada-based online dating and social networking service Ashely Madison used inadequate privacy and security technology while marketing itself as a discreet and secure way for consenting adults to have affairs. CBC.ca reports: "In a report Tuesday, the privacy watchdog says the Toronto-based company violated numerous privacy laws in Canada and abroad in the era before a massive data breach exposed confidential information from their clients to hackers. The hack stole correspondence, identifying details and even credit card information from millions of the site's users. The resulting scandal cost the company about a quarter of its annual revenues from irate customers who demanded refunds and cancelled their accounts. Working with a similar agency in Australia, the privacy group says the company knew that its security protocols were lacking but didn't do enough to guard against being hacked. The company even adorned its website with the logo of a 'trusted security award' -- a claim the company admits it fabricated." The report found that "poor habits such as inadequate authentication processes and sub-par key and password management practices were rampant at the company" and that "much of the company's efforts to monitor its own security were 'focused on detecting system performance issues and unusual employee requests for decryption of sensitive user data.'" What's more is that Ashley Madison continued to store personal information of its users even after some of which had deleted or deactivated their account(s). These people then had their information included in databases published online after the hack.

The Linux operating system kernel is 25 years old this month, ArsTechnica writes. It was August 25, 1991 when Linus Torvalds posted his famous message announcing the project, claiming that Linux was "just a hobby, won't be big and professional like gnu." From the article: But now, Linux is far bigger and more professional than Torvalds could have imagined. Linux powers huge portions of the Internet's infrastructure, corporate data centers, websites, stock exchanges, the world's most widely used smartphone operating system, and nearly all of the world's fastest supercomputers. The successes easily outweigh Linux's failure to unseat Microsoft and Apple on PCs, but Linux has still managed to get on tens of millions of desktops and laptops and Linux software even runs on Windows.Do you use any Linux-based operating system? Share your experience with it. What changes would you want to see in it in the next five years?

An anonymous reader writes: The U.S. broadband association USTelecom, a trade association representing many ISPs, is taking a stand against abusive takedown notices and a recent push to terminate the accounts of repeat infringers. They argue that ISPs are not required to pass on takedown notices and stress that their subscribers shouldn't lose Internet access based solely on copyright holder complaints. ustelecoSigned into law nearly two decades ago, the Digital Millenium Copyright Act (DMCA) aimed to ready copyright law for the digital age. The law introduced a safe harbor for Internet providers, meaning that they can't be held liable for their pirating users as long as they 'deal' with repeat infringers.

An anonymous reader writes: The developers of the Palo Moon browser are thinking of scratching their current codebase due to the fact that it doesn't support many of today's current Web standards, and because future Firefox plans will introduce incompatibilities within its codebase. The team plans to build a new browser from scratch, which they'll use to replace Pale Moon when it reaches a stable version. As with the old Pale Moon, the browser will keep Firefox's pre-Australis interface and still support many features removed in Firefox, like Tab Groups and full themes.

AmiMoJo writes: Airbus, a leading aircraft manufacturer, has recently applied for a pair of airplane seat patents that simultaneously look to increase customer comfort while stripping away what little room remains. The first patent is for a "Re-Configurable Passenger Bench Seat," which allows seat belts and arm rests to be moved to accommodate different size passengers (e.g. two large adults, or two small adults and two small children in a row). The second patent places a storage box under each seat, which is accessed by raising the seat cushion. Of course, this means there wouldn't be room for your feet under the seat in front of you.

MojoKid writes: AMD is making a stink about SYSMark, a popular benchmarking program that's been around for many years, and one the chip designer says is not reliable. Rather than provide meaningful results and information, AMD claims SYSMark unfairly favors Intel products and puts too much emphasis on strict CPU performance above all else. John Hampton, director of AMD's client computing products, explained in a video why SYSMark itself is an unreliable metric of performance. He even brought up the "recent debacle" involving Volkswagen as proof that "information provided by even the most established organizations can be misleading." Salinas says SYSMark's focus on the CPU is so "excessive" that it's really only evaluating the processor, not the system as a whole. In comparison, PCMark 8 probes not only the CPU, but graphics and subsystems as well. In an attempt to drive the point home, AMD ran a set of custom scripts it developed based on Microsoft Office and timed how long it took each system to complete them. The Intel system took 61 seconds to finish the benchmark versus 64 seconds for the AMD platform, a difference of about 6-7 percent and in line with what PCMark 8 indicated, though Sysmark shows a stark delta of 50 percent in favor of Intel with comparable CPUs.

Deathlizard writes with a report at Engadget that when this year's "Forbes 30 Under 30" list came out , "it featured a prominent security researcher. Other researchers were pleased to see one of their own getting positive attention, and visited the site in droves to view the list. On arrival, like a growing number of websites, Forbes asked readers to turn off ad blockers in order to view the article. After doing so, visitors were immediately served with pop-under malware, primed to infect their computers, and likely silently steal passwords, personal data and banking information."

Lucas123 writes The inherent issues that come with highly complex and kludgey electronic medical records — and for the healthcare professionals required to use them — hasn't been lost on lawyers, who see the potential for millions of dollars in judgments for plaintiffs suing for medical negligence or malpractice. Work flows that require a dozen or more mouse clicks to input even basic patient information has prompted healthcare workers to seek short cuts, such as cutting and pasting from previous visits, a practice that can also include the duplication of old vital sign data, or other critical information, such as a patient's age. While the malpractice suits have to date focused on care providers, they'll soon target EMR vendors, according to Keith Klein, a medical doctor and professor of medicine at UCLA. Klein has been called as an expert witness for more than 350 state or federal medical malpractice cases and he's seen a marked rise in plaintiff attorney's using EMRs as evidence that healthcare workers fell short of their responsibility for proper care. In one such case, a judge awarded more than $7.5 million when a patient suffered permanent kidney damage, and even though physicians hadn't neglected the patient, the complexity of the EMR was responsible for them missing uric kidney stone. The EMR was ore than 3,000 pages in length and included massive amounts of duplicated information, something that's not uncommon.

astroengine writes Mars Exploration Rover Opportunity has been exploring the Martian surface for over a decade — that's an amazing ten years longer than the 3-month primary mission it began in January 2004. But with its great successes, inevitable age-related issues have surfaced and mission engineers are being challenged by an increasingly troubling bout of "amnesia" triggered by the rover's flash memory. "The problems started off fairly benign, but now they've become more serious — much like an illness, the symptoms were mild, but now with the progression of time things have become more serious," Mars Exploration Rover Project Manager John Callas, of NASA's Jet Propulsion Laboratory in Pasadena, Calif., told Discovery News.