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."

eldavojohn writes "Ars analyzes some knockoffs and near-knockoffs in the gaming world that led to problems with the original developers. Jenova Chen, creator of Flower and flOw, discusses how he feels about the clones made of his games. Chen reveals his true feelings about the takedown of Aquatica (a flOw knockoff): 'What bothers me the most is that because of my own overreaction, I might have created a lot of inconvenience to the creator of Aquatica and interrupted his game-making. He is clearly talented, and certainly a fan of flOw. I hope he can continue creating video games, but with his own design.' The article also notes the apparent similarities between Zynga's Cafe World and Playfish's Restaurant City (the two most popular Facebook games). Is that cloning or theft? Should clones be welcomed or abhorred?"