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United States

FCC Says No to Mobile Phones on Airplane 398

GayBliss writes "CNN is reporting that the FCC has decided to keep a rule in place that would ban mobile phone usage on airplanes. The FAA has a similar ban, but for different reasons. 'In an order released Tuesday, the agency noted that "insufficient technical information" was available on whether airborne cell phone calls would jam networks below. [...]Unlike the Federal Aviation Administration, which bans the use of cell phones and other portable electronic devices for fear they will interfere with navigational and communications systems, the FCC's concern is interference with other cell phone signals on the ground.'"
Space

Submission + - Massive star burps, then explodes

gollum123 writes: "Tens of millions of years ago, in a galaxy far, far away, a massive star suffered a nasty double whammy ( http://www.berkeley.edu/news/media/releases/2007/0 4/04_supernova.shtml ). Signs of the first shock reached Earth on Oct. 20, 2004, when the star was observed letting loose an outburst so enormous and bright that Japanese amateur astronomer Koichi Itagaki initially mistook it for a supernova. The star survived for nearly two years, however, until on Oct. 11, 2006, professional and amateur astronomers witnessed it blowing itself to smithereens as Supernova (SN) 2006jc. All the observations suggest that the supernova's blast wave took only a few weeks to reach the shell of material ejected two years earlier, which did not have time to drift very far from the star. As the wave smashed into the ejecta, it heated the gas to millions of degrees, hot enough to emit copious X-rays. The Swift satellite saw the supernova continue to brighten in X-rays for 100 days, something that has never been seen before in a supernova. All supernovae previously observed in X-rays have started off bright and then quickly faded to invisibility."

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