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School District Drops 'D' Grades 617

Students in one New Jersey school district will no longer be able to squeak by in class after the Morris County School Board approved dropping the D grade. Beginning in the fall students who don't get a C or higher will get an F on their report card. "I'm tired of kids coming to school and not learning and getting credit for it," said Superintendent Larrie Reynolds in a Daily Record report.
Space

Astronomers Solve the Mystery of 'Hanny's Voorwerp' 123

KentuckyFC writes "In 2007, a Dutch school teacher named Hanny van Arkel discovered a huge blob of green-glowing gas while combing though images to classify galaxies. Hanny's Voorwerp (meaning Hanny's object in Dutch) is astounding because astronomers have never seen anything like it. Although galactic in scale, it is clearly not a galaxy because it does not contain any stars. That raises an obvious question: what is causing the gas to glow? Now a new survey of the region of sky seems to have solved the problem. The Voorwerp lies close to a spiral galaxy which astronomers now say hides a massive black hole at its center. The infall of matter into the black hole generates a cone of radiation emitted in a specific direction. The great cloud of gas that is Hanny's Voorwerp just happens to be in the firing line, ionizing the gas and causing it to glow green. That lays to rest an earlier theory that the cloud was reflecting an echo of light from a short galactic flare up that occurred 10,000 years ago. It also explains why Voorwerps are so rare: these radiation cones are highly directional so only occasionally do unlucky gas clouds get caught in the crossfire."
The Internet

Researchers Warn of Possible BitTorrent Meltdown 294

secmartin writes "Researchers at Delft University warn that large parts of the BitTorrent network might collapse if The Pirate Bay is forced to shut down. A large part of the available torrents use The Pirate Bay as tracker, and other available trackers will probably be overloaded if all traffic is shifted there. TPB is currently using eight servers for their trackers. According to the researchers, even trackerless torrents using the DHT protocol will face problems: 'One bug in a DHT sorting routine ensures that it can only "stumble upon success", meaning torrent downloads will not start in seconds or minutes if Pirate Bay goes down in flames.'"

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