Tag: universe

Finally Calculated: All the Legal Positions In a 19×19 Game of Go

Reader John Tromp points to an explanation posted at GitHub of a computational challenge Tromp coordinated that makes a nice companion to the recent discovery of a 22 million-digit Mersenne prime. A distributed effort using pooled computers from two centers at Princeton, and more contributed from the HP Helion cloud, after “many hiccups and a few catastrophes” calculated the number of legal positions in a 19×19 game of Go. Simple as Go board layout is, the permutations allowed by the rules are anything but simple to calculate: “For running an L19 job, a beefy server with 15TB of fast scratch diskspace, 8 to 16 cores, and 192GB of RAM, is recommended. Expect a few months of running time.” More: Large numbers have a way of popping up in the game of Go. Few people believe that a tiny 2×2 Go board allows for more than a few hundred games. Yet 2×2 games number not in the hundreds, nor in the thousands, nor even in the millions. They number in the hundreds of billions! 386356909593 to be precise. Things only get crazier as you go up in boardsize. A lower bound of 10^10^48 on the number of 19×19 games, as proved in our paper, was recently improved to a googolplex. (For anyone who wants to double check his work, Tromp has posted as open source the software used.) Read more of this story at Slashdot.

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Finally Calculated: All the Legal Positions In a 19×19 Game of Go

Caltech Astronomers Say a Ninth Planet Lurks Beyond Pluto

sciencehabit writes: The solar system may have a new ninth planet. Today, two scientists announced evidence that a body nearly the size of Neptune — but as yet unseen — orbits the sun every 15, 000 years. During the solar system’s infancy 4.5 billion years ago, they say, the giant planet was knocked out of the planet-forming region near the sun. Slowed down by gas, the planet settled into a distant elliptical orbit, where it still lurks today. Here’s a link to the full academic paper published in The Astronomical Journal. Read more of this story at Slashdot.

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Caltech Astronomers Say a Ninth Planet Lurks Beyond Pluto

The Three Possible Classes of Interstellar Travel

An anonymous reader writes: The stars call to us through the ages, with each and every one holding the promise of a future for humanity beyond Earth. For generations, this was a mere dream, as our technology allowed us to neither know what worlds might lie beyond our own Solar System or to reach beyond our planet. But time and development has changed both of those things significantly. Now, when we look to the stars, we know that potentially habitable worlds lurk throughout our galaxy, and our spaceflight capabilities can bring us there. But so far, it would only be a very long, lonely, one-way trip. This isn’t necessarily going to be the case forever, though, as physically feasible technology could get humans to another star within a single lifetime, and potentially groundbreaking technology might make the journey almost instantaneous. Read more of this story at Slashdot.

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The Three Possible Classes of Interstellar Travel

Google will strip Oracle’s Java code out of Android

Google has confirmed that it will no longer use Java application programming interfaces (APIs) from Oracle in future versions of Android, according to VentureBeat . Instead, it will switch to OpenJDK, an open-source version of Oracle’s own Java Development Kit. While you might ask, “Who actually cares?”, Google says the change will simplify app development by creating a common codebase for Java. It’s hard to imagine that such a huge change (8, 902 files are supposedly affected) isn’t related to Google’s ongoing legal dispute with Oracle, though. That dispute, depending on how it’s resolved, could adversely affect Android development and app coding in general. The epic dispute started when Oracle sued Google for copyright back in 2010, claiming that Google improperly used its Java APIs. Google argued that the APIs in question were essential for to software innovation, and therefore couldn’t be copyrighted. In 2012, a jury found that Google didn’t infringe Oracle’s copyright, but a Federal court mostly reversed the decision in 2014. The US Supreme court didn’t want to touch the case and sent it back to a lower court, where it currently sits. Users on Y Combinator’s Hacker News who first spotted the code have theorized that it may mean that Google and Oracle have settled the lawsuit out of court. However, Google told VentureBeat that the legal dispute is still ongoing, so it couldn’t comment on whether the code change is related. As for how this affects you or me, the new code should make it a touch simpler for Android N developers, possibly resulting in better apps and quicker updates. However, the court’s upcoming decision could have much wider ramifications. If they decide that API’s from the likes of Java can be copyrighted, it could turn the patent wars into even more of a cluster-you-know-what. Source: VentureBeat

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Google will strip Oracle’s Java code out of Android

Christmas Lights Might Slow Down Your Wi-Fi

Did your Netflix stream grind to a halt as your loved one set up the Christmas decorations? According to British telecoms watchdog Ofcom, it could be the fairy lights that slow down your Wi-Fi network at this time of year. Read more…

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Christmas Lights Might Slow Down Your Wi-Fi

There’s a New Form of Carbon That’s Harder Than Diamond

Researchers have discovered a new form of carbon structure, called Q-carbon, that’s harder than diamond and allows artificial versions of the precious stone to be made at room temperature and pressure. Read more…

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There’s a New Form of Carbon That’s Harder Than Diamond

Harvard creates a material that lets light go ‘infinitely fast’

Researchers at Harvard University announced recently that they had successfully developed a means of manipulating light at the nanoscale, which could lead to photonic-based ( rather than electronic ) telecommunications. Think, ubiquitous fiber optics. The team reportedly developed an on-chip metamaterial made from silicon pillars embedded in polymer and wrapped in gold film that exhibits a refractive index of zero. In English, that means that the phase of light passing through this material can travel infinitely fast without violating the known laws of physics. Source: Harvard University

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Harvard creates a material that lets light go ‘infinitely fast’

CenturyLink Takes $3B In Subsidies For Building Out Rural Broadband

New submitter club77er writes with a link to a DSL Reports article outlining some hefty subsidies (about $3 billion, all told) that CenturyLink has signed up to receive, in exchange for expanding its coverage to areas considered underserved: According to the CenturyLink announcement, the telco will take $500 million a year for six years from the Federal Communications Commission (FCC)’s Connect America Fund (CAF). In exchange, it will expand broadband to approximately 1.2 million rural households and businesses in 33 states. While the FCC now defines broadband as 25 Mbps down, these subsidies require that the deployed services be able to provide speeds of at least 10 Mbps down. Read more of this story at Slashdot.

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CenturyLink Takes $3B In Subsidies For Building Out Rural Broadband

You Can Now Install Popcorn Time for iOS from Your Mac

iOS/Mac: In an odd move, the original version of the non-jailbreak version of Popcorn Time required a Windows computer to install it. Thankfully, Mac users can get in on the fun now with a new Mac installer. Read more…

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You Can Now Install Popcorn Time for iOS from Your Mac