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12 July 2021 Danish Student solves how the Universe is reflected near black holesAstrophysics:In the vicinity of black holes, space is so warped that even light rays may curve around them several times. This phenomenon may enable us to see multiple versions of the same thing. While this has been known for decades, only now do we have an exact, mathematical expression, thanks to Albert Sneppen, student at the Niels Bohr Institute. The result, which even is more useful in realistic black holes, has just been published in the journal Scientific Reports. A disk of glowing gas swirls into the...

Professional biologist and amateur mathematician Aubrey de Grey has partially solved the Hadwiger-Nelson problem, which has vexed mathematicians since 1950. He has published a paper describing the solution on the arXiv preprint server. The Hadwiger-Nelson problem came about when Edward Nelson and Hugo Hadwiger wondered about the smallest number of colors necessary to color all of the points on a graph, with no two connected points using the same color. Over the years, mathematicians have attacked the problem, and have narrowed the possibilities down to four, five, six or seven. Now, de Grey has eliminated the possibility of four colors...

Police say three people who robbed a man's Oklahoma flat were caught by his wife in the Philippines, who saw them on the webcam the couple communicate with while apart. Midwest City police Chief Brandon Clabes says officers nabbed the three burglary suspects over the weekend after Maribel Chouinard spotted them and called her husband, an Air Force master sergeant at Tinker Air Force Base in Oklahoma City. The husband called police, who found two teens near the apartment and later found the third suspect. Mr Clabes says all three were identified from a photo line-up e-mailed to Mrs Chouinard...

You know those guys who can solve a Rubik's cube in a matter of seconds? Well, Graham Parker is definitely not one of them. After 26 years of trying, Parker finally managed to solve the Rubik's cube that confounded him. Now, you may be thinking that he only occasionally picked up the puzzle, slowing his progress—but the reality is that he obsessed over it day after day, night after night. 'I cannot tell you what a relief it was to finally solve it,' the 45-year-old from Portchester, Hampshire, said. 'It has driven me mad over the years – it felt...

Physik Astronomie Louisiana State University 14.01.2005 LSU researcher solves ancient astronomy mystery An ancient mystery may have been solved by LSU Associate Professor of Physics and Astronomy Bradley E. Schaefer. Schaefer has discovered that the long-lost star catalog of Hipparchus, which dates back to 129 B.C., appears on a Roman statue called the Farnese Atlas. Hipparchus was one of the greatest astronomers of antiquity and his star catalog was the first in the world, as well as the most influential. The catalog was lost early in the Christian era, perhaps in the fire at the great library in Alexandria. The...

<p>SACRAMENTO - The state budget Gov. Gray Davis plans to sign Saturday sticks a Band-Aid on California's record $38.2 billion deficit but fails to cure its fundamental financial woes.</p> <p>Even as lawmakers fled the capital and its searing heat Wednesday, the sighs of relief over finally reaching a budget compromise were replaced with the realization that when they return they'll have to defuse a ticking time bomb: a $7.9 billion shortfall.</p>