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Space

Big Dipper "Star" Actually a Sextuplet System 88

Theosis sends word that an astronomer at the University of Rochester and his colleagues have made the surprise discovery that Alcor, one of the brightest stars in the Big Dipper, is actually two stars; and it is apparently gravitationally bound to the four-star Mizar system, making the whole group a sextuplet. This would make the Mizar-Alcor sextuplet the second-nearest such system known. The discovery is especially surprising because Alcor is one of the most studied stars in the sky. The Mizar-Alcor system has been involved in many "firsts" in the history of astronomy: "Benedetto Castelli, Galileo's protege and collaborator, first observed with a telescope that Mizar was not a single star in 1617, and Galileo observed it a week after hearing about this from Castelli, and noted it in his notebooks... Those two stars, called Mizar A and Mizar B, together with Alcor, in 1857 became the first binary stars ever photographed through a telescope. In 1890, Mizar A was discovered to itself be a binary, being the first binary to be discovered using spectroscopy. In 1908, spectroscopy revealed that Mizar B was also a pair of stars, making the group the first-known quintuple star system."
Businesses

Nokia Gives Carriers a Cut of App Store Sales 13

Robbie B writes "Nokia mobile users will be able to pay for apps from the Ovi App Store on their mobile phone bill. Nokia is working on billing relationships with mobile operators around the globe, according to the story. Nokia developers will subsequently have to share their spoils with mobile operators should consumers choose mobile phone billing over the credit card option. That aside, the terms and conditions of the app store look to be quite fair — more in the style of Apple and Android (no fees for each app or update uploaded) than the terms of Windows Mobile Marketplace or Blackberry App World."

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