By BeauHD from Slashdot's blast-from-the-past department
schwit1 shares a report from Space.com: Some distant objects in our solar system bear the gravitational imprint of a small star's close flyby 70,000 years ago, when modern humans were already walking the Earth, a new study suggests. In 2015, a team of researchers announced that a red dwarf called Scholzs star apparently grazed the solar system 70,000 years ago, coming closer than 1 light-year to the sun. For perspective, the suns nearest stellar neighbor these days, Proxima Centauri, lies about 4.2 light-years away. The astronomers came to this conclusion by measuring the motion and velocity of Scholzs star -- which zooms through space with a smaller companion, a brown dwarf or "failed star" -- and extrapolating backward in time. Scholz's star passed by the solar system at a time when early humans and Neanderthals shared the Earth. The star likely appeared as a faint reddish light to anyone looking up at the time, researchers with the new study said. The study has been published in the journal Monthly Notices of the Royal Astronomical Society: Letters.Read Replies (0)
By BeauHD from Slashdot's rock'em-sock'em-rockets department
The Falcon 9 rocket that launched last August reportedly ripped a temporary hole in the ionosphere due to its vertical launch, which Ars Technica notes as being rather unusual: Contrary to popular belief, most of the time when a rocket launches, it does not go straight up into outer space. Rather, shortly after launch, most rockets will begin to pitch over into the downrange direction, limiting gravity drag and stress on the vehicle. Often, by 80 or 100km, a rocket is traveling nearly parallel to the Earth's surface before releasing its payload into orbit. However, in August of last year, a SpaceX Falcon 9 rocket launch from California did not make such a pitch over maneuver. Rather, the Formosat-5 mission launched vertically and stayed that way for most of its ascent into space. The rocket could do this because the Taiwanese payload was light for the Falcon 9 rocket, weighing only 475kg and bound for an orbit 720km above the Earth's surface. As a result of this launch profile, the rocket maintained a nearly vertical trajectory all the way through much of the Earth's ionosphere, which ranges from about 60km above the planet to 1,000km up. In doing so, the Falcon 9 booster and its second stage created unique, circular shockwaves. The rocket launch also punched a temporary, 900-km-wide hole into the plasma of the ionosphere.Read Replies (0)
By BeauHD from Slashdot's headache-free department
In a 3-2, party-line vote Thursday, FCC commissioners passed a measure that exempts small cell radio deployments from federal environmental and historical preservation reviews originally meant for large cell phone towers. The vote didn't affect reviews from towns and cities, but the agency may consider exemptions for those reviews later this year. CNET reports: Republican FCC Commissioner Brendan Carr has been leading the agency's charge in promoting 5G. He said the exemptions are sorely needed because reviews have been costing wireless operators too much and have slowed deployments. In 2017, these federal reviews cost providers $36 million. He anticipates that as 5G deployments increase in the coming year they could cost providers as much as $241 million. Meanwhile, he said FCC records show that less than 1 percent of cases reviewed resulted in any changes to planned deployments. "The disproportionate fees are the product of a broken and outdated system," Carr said. "This threatens to hold us back in the race to 5G or limit the business case to densely populated or affluent areas." He added that with Thursday's rule change, the FCC "can flip the business case for thousands of communities." Democratic Commissioner Jessica Rosenworcel, however, said that though the current reviews process does involve red tape, Thursday's change "misses the mark" and also runs afoul of key environmental and historic preservation values.Read Replies (0)
By BeauHD from Slashdot's sweet-dreams department
dryriver shares a report from the BBC: The government in South Korea's capital is introducing a new initiative to force its employees to leave work on time -- by powering down all their computers at 20:00 on Fridays. It says it is trying to stop a "culture of working overtime." South Korea has some of the longest working hours in the world. Government employees there work an average of 2,739 hours a year -- about 1,000 hours more than workers in other developed countries. The shutdown initiative in the Seoul Metropolitan Government is set to roll out across three phases over the next three months. The program will begin on March 30, with all computers switched off by 20:00. The second phase starts in April, with employees having their computers turned off by 19:30 on the second and fourth Friday that month. From May on, the program will be in full-swing, with computers shut off by 19:00 every Friday. According to a SMG statement, all employees will be subjected to the shutdown, though exemptions may be provided in special circumstances. However, not every government worker seems to be on-board -- according to the SMG, 67.1% of government workers have asked to be exempt from the forced lights-out. Earlier this month, South Korea's national assembly passed a law to cut down the maximum weekly working hours to 52, down from 68.'Read Replies (0)
By BeauHD from Slashdot's system-failure department
Ever since the Tempe police released a video of Uber's self-driving car hitting and killing a pedestrian, experts have been racing to analyze the footage and determine what exactly went wrong. (If you haven't watched the video, you can do so here. Warning: it's disturbing, though the actual impact is removed.) In a blog post, software architect and entrepreneur Brad Templeton highlights some of the big issues with the video:
1. On this empty road, the LIDAR is very capable of detecting her. If it was operating, there is no way that it did not detect her 3 to 4 seconds before the impact, if not earlier. She would have come into range just over 5 seconds before impact.
2.On the dash-cam style video, we only see her 1.5 seconds before impact. However, the human eye and quality cameras have a much better dynamic range than this video, and should have also been able to see her even before 5 seconds. From just the dash-cam video, no human could brake in time with just 1.5 seconds warning. The best humans react in just under a second, many take 1.5 to 2.5 seconds.
3. The human safety driver did not see her because she was not looking at the road. She seems to spend most of the time before the accident looking down to her right, in a style that suggests looking at a phone.
4.While a basic radar which filters out objects which are not moving towards the car would not necessarily see her, a more advanced radar also should have detected her and her bicycle (though triggered no braking) as soon as she entered the lane to the left, probably 4 seconds before impact at least. Braking could trigger 2 seconds before, in theory enough time.)
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By BeauHD from Slashdot's irony-at-its-finest department
An anonymous reader quotes a report from TorrentFreak: For many years, KeepVid has been a prime destination for people who wanted to download videos from YouTube, Dailymotion, Facebook, Vimeo, and dozens of other sites. The web application was free and worked without any hassle. This was still the case earlier this month when the site advertised itself as follows: "KeepVid Video Downloader is a free web application that allows you to download videos from sites like YouTube, Facebook, Twitch.Tv, Vimeo, Dailymotion and many more." However, a few days ago the site radically changed its course. While the motivation is unknown at the time, KeepVid took its popular video download service offline without prior notice. Today, people can no longer use the KeepVid site to download videos. On the contrary, the site warns that using video download and conversion tools might get people in trouble. "Video downloading from the Internet will become more and more difficult, and KeepVid encourages people to download videos via the correct and legal ways," the new KeepVid reads. The site now lists several alternative options to enjoy videos and music, including Netflix, Hulu, Spotify, and Pandora.Read Replies (0)
By BeauHD from Slashdot's lay-down-the-law department
New submitter cornholed writes: Yesterday, Reddit updated their Content Policy forbidding transactions for certain goods and services. From the formal announcement on Reddit: "As of today, users may not use Reddit to solicit or facilitate any transaction or gift involving certain goods and services, including: firearms, ammunition, or explosives; drugs, including alcohol and tobacco, or any controlled substances (except advertisements placed in accordance with our advertising policy); paid services involving physical sexual contact; stolen goods; personal information; falsified official documents or currency." Bloomberg has an interesting write-up on how Reddit is wading into the gun control debate. See this post on Reddit for a full-list of all subreddits banned. "Reddit has been something of a Wild West for users building communities by curating and commenting on content in subreddits," reports Bloomberg. "Sometimes, as in the case with gun sales, marketplaces emerge in the course of conversations within specific communities. With Reddit's increased popularity -- the site is the sixth-most-visited in the world -- has come introspection and stricter content guidelines. The company recognizes its responsibility for having provided a platform for hate groups to flourish and, more recently, the possibility that Russian propaganda on the site may have played a role in influencing the 2016 presidential election."Read Replies (0)
By msmash from Slashdot's upon-further-inspection department
When the mummified remains of a six-inch humanoid were found in an abandoned mining town in Chile's Atacama desert 15 years ago, speculation on its origins ran wild. The skeleton, it is being reported, was so bizarre it appeared in a documentary as potential evidence for alien life. But now scientists in California have extracted DNA from the mummy's bones and pieced together the real and tragic story of the individual, known as Ata. Rather than a visitor from another world, Ata was a girl who appears to have been stillborn, or to have died immediately after birth, with devastating mutations that shaped her extraordinary body. From a report: Now, the authors of a study based on five years of genomic analysis want to set the record straight: Ata is human, albeit one with multiple bone disease-associated mutations. And they believe that their findings, published Thursday in the journal Genome Research, could help diagnose genetic mutation-based cases for living patients. In 2003, Ata was found in a deserted mining town called La Noria, in Chile's Atacama region. It was thought to be ancient at first, but initial analysis conducted in 2012 proved that the skeleton was only about 40 years old. This meant DNA would still be intact and could be retrieved for study.Read Replies (0)
By msmash from Slashdot's tussle-continues department
Following months of investigations by the U.S. Trade Representative Robert Lighthizer, the Trump administration announced on Thursday at a White House briefing that the administration intends to place about $60 billion of tariffs on Chinese goods, with the bulk of them likely to be focused on the high-tech industry. The White House will announce a final list of goods subject to the tariffs in the next few weeks. From a report: "We've lost over a fairly short period of time, 60,000 factories in our country. Closed, shuttered, gone. Six million jobs at least, gone. And now they are starting to come back," President Trump said during the briefing. "The word that I want to use is reciprocal -- when they charge 25 percent for a car to go in, and we charge 2 percent for their car to come into the United States, that's not good. That's how China rebuilt itself."Read Replies (0)