Science News reports on a paper to be published in Physical Review Letters in which an international team of researchers describes their computer simulation of the most violent collision imaginable: two black holes colliding head-on at nearly light-speed. Even in this extreme scenario, Roger Penrose's weak cosmic censorship hypothesis seems to hold — the resulting black hole (after the gravitational waves have died down) retains its event horizon. "Mathematically, 'naked' singularities, or those without event horizons, can exist, but physicists wouldn't know what to make of them. All known mechanisms for the formation of singularities also create an event horizon, and Penrose conjectured that there must be some physical principle — a 'cosmic censor' — that forbids singularity nakedness ..."

Astronomers led by Simon Driver of Scotland's University of St. Andrews have discovered that interstellar dust shades us from as much as 50% of the light emitted by stars and galaxies. The scientists compared the number of galaxies we could see "edge-on" against the number which were "facing us," reasoning that dust would obscure more of the former, since we already receive less light from them. SPACE.com notes, "In fact, the researchers counted about 70 percent fewer edge-on galaxies than face-on galaxies." A NYTimes report provides some additional details: "Interstellar dust absorbs the visible light emitted by stars and then re-radiates it as infrared, or heat, radiation. But when astronomers measured this heat glow from distant galaxies, the dust appeared to be putting out more energy than the stars. 'You can't get more energy out than you put in, so we knew something was very wrong,' said Dr. Driver. The results also mean that there is about 20 percent more mass in stars than previously thought."

JeffreysTube writes "The RIAA's legal fight against a divorced mother has run into trouble, with the judge now telling the RIAA that its only two options are to proceed with a jury trial against Patty Santangelo or dismiss the case with prejudice. If the latter happens, Santangelo officially "wins" and could collect attorneys' fees. The judge is less than pleased with the RIAA, which is now trying to drop the case without giving Santangelo a chance to be declared guilty. 'This case is two years old,' wrote Judge McMahon. 'There has been extensive fact discovery. After taking this discovery, either plaintiffs want to make their case that Mrs. Santangelo is guilty of contributory copyright infringement or they do not.'"