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Stories and comments across the archive that link to blogspot.it.
Stories · 5
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Newly Discovered Asteroid To Pass Within Geostationary Orbit Sunday
theshowmecanuck writes: A newly found asteroid the size of a house will give earth a close flyby this weekend. It will pass just below satellites in geostationary orbit, and above New Zealand around 14:18 EDT / 18:18 GMT / 06:18 NZST this coming Sunday (Monday morning in NZ). "Asteroid 2014 RC was initially discovered on the night of August 31 by the Catalina Sky Survey near Tucson, Arizona, and independently detected the next night by the Pan-STARRS 1 telescope, located on the summit of Haleakal on Maui, Hawaii," NASA officials said in a statement. -
New Release of DICE, the CPU-Less Arcade Game Emulator, Adds Four Games
KingofGnG writes "DICE is a small emulator dedicated to recreating on a modern computer the arcade games based on discrete circuits: ancient and bizarre entertainment machines where the electronic components required for the game experience were soldered individually on the circuit board and where there was no trace of integrated circuit or CPU. It's an obscure and fascinating kind of emulation, and the offering of emulated games grows richer with each release." Released a few days ago, DICE 0.8 adds support for four new games: Atari's Crossfire and Pin Pong, and Ramtek's Clean Sweep and Wipe Out. -
New Release of DICE, the CPU-Less Arcade Game Emulator, Adds Four Games
KingofGnG writes "DICE is a small emulator dedicated to recreating on a modern computer the arcade games based on discrete circuits: ancient and bizarre entertainment machines where the electronic components required for the game experience were soldered individually on the circuit board and where there was no trace of integrated circuit or CPU. It's an obscure and fascinating kind of emulation, and the offering of emulated games grows richer with each release." Released a few days ago, DICE 0.8 adds support for four new games: Atari's Crossfire and Pin Pong, and Ramtek's Clean Sweep and Wipe Out. -
Big Asteroid (With Its Own Moon) To Have Closest Approach With Earth Today
An anonymous reader writes "Asteroid 1998 QE2 has an estimated diameter of 2.7 km. This asteroid will have a close approach with Earth at about 15.2 LD (Lunar Distances = ~384,000 kilometers) or 0.0392 AU (1 AU = ~150 million kilometers) at 2059 UT on 2013 May 31 and it will reach the peak magnitude ~10.8 on May 31 around 2300 UT." Radar images of the asteroid taken Wednesday show that 1998 QE2 has its own tiny moon, about 600 meters wide. Phil Plait explained how the images were taken, and what further information we gleaned from them. 'The very presence of the moon is a good thing. By measuring how long it takes to go around the primary, the mass of the primary can be found using math known for centuries (the more massive the big asteroid, the faster the moon will go around it at a given distance). We also know the size of the primary, so that means we can find its density, and therefore what it’s made of (probably mostly rock).' -
ATLAS Results: One Higgs Or Two?
TaeKwonDood writes with news from CERN about more results in the search for the Higgs Boson, this time from the ATLAS experiment. Researchers report peaks in the data in accordance with what they'd expect from the Higgs. The curiosity is that the peaks are a couple GeV away from each other. "The ATLAS analyses in these channels return the best fit Higgs masses that differ by more than 3 GeV: 123.5 GeV for ZZ and 126.6 GeV for gamma-gamma, which is much more than the estimated resolution of about 1 GeV. The tension between these 2 results is estimated to be 2.7sigma. Apparently, ATLAS used this last month to search for the systematic errors that might be responsible for the discrepancy but, having found nothing, they decided to go public." Scientific American has a more layman-friendly explanation available. As this work undergoes review, physicists hope more eyes and more data will shed some light on this incongruity. Tommaso Dorigo, a particle physicist working at the CMS experiment at CERN, writes, "Another idea is that the gamma-gamma signal contains some unexpected background which somehow shifts the best-fit mass to higher values, also contributing to the anomalously high signal rate. However, this also does not hold much water — if you look at the various mass histograms produced by ATLAS (there is a bunch here) you do not see anything striking as suspicious in the background distributions. Then there is the possibility of a statistical fluctuation. I think this is the most likely explanation." Matt Strassler provides a broader update to the work proceeding on nailing down the Higgs boson.