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Searching for the Universe s Most Energetic Particles, Astronomers Turn on the Radio

Scientific American New radio-based observatories could soon detect ultrahigh-energy neutrinos, opening a new window on extreme cosmic physics Print An artist’s composite of the IceCube Neutrino Observatory in Antarctica, accompanied by a distant astrophysical source emitting neutrinos that are detected in IceCube’s subsurface sensors. Credit: IceCube and NSF Advertisement Ever since their discovery in the 1960s, ultrahigh-energy cosmic rays have captivated scientists, who wonder where they come from. Like all cosmic rays, they are arguably misnamed: they are not “rays” of radiation but rather subatomic particles, such as protons or even entire nuclei, zipping through space. Such ultrahigh energies come from ultrahigh speeds, approaching that of light itself.

Remember Comcast s worst ever salesman? Here s a challenger from Adobe

Perhaps you won t want to be on his side for the 87 minutes that followed. Please, though, don t dismiss this Canadian actuary before you hear his delightfully twisted online chat encounter with Adobe. If, by the end, it reminds you at least a little of the infamous, overly committed Comcast retention agent who, a few years ago, just wouldn t let a customer cut the cord, then at least you ll have had some fun. It all began on Dec. 27 last year at 5:17 pm. Gorham, an Ontario actuary, suddenly got a bill for $274.42 from the software company. This upset him a touch as he was sure he d tried Acrobat Pro DC for three days, found it didn t please him, and canceled it in the belief he d get a refund.

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