Double meteorite strike 'caused dinosaur extinction' - BBC News
"The dinosaurs were wiped out 65 million years ago by at least two meteorite impacts, rather than a single strike, a new study suggests.
Now evidence for a second impact in the Ukraine has been uncovered.
The Boltysh Crater in the Ukraine was first reported in 2002. However, until now it was uncertain exactly how the timing of this event related to the Chicxulub impact.
http://www.bbc.co.uk/news/science-environment-11112417
Study suggests dinosaurs killed off by more than one asteroid
http://www.physorg.com/news202449869.html
22億年前の「超温暖化」は地球に何をもたらしたのか？（1） | WIRED
6億年前の「マリノアン氷河時代」
7億年前の「スターチアン氷河時代」
22億年前の「ヒューロニアン氷河時代」の全球凍結後には、酸素濃度が急激に上昇し、真核生物が誕生する契機になったとも言われている。
1999年、氷河堆積物を覆う炭酸塩岩中の炭素同位体を測定することで、約7億〜6億年前の氷河時代の直後に「生物による光合成活動が完全に停止した」ことを明らかに。
http://wiredvision.jp/blog/yamaji/201008/201008271401.html
すばる望遠鏡 謎のダークガンマ線バーストの正体に迫る - すばる望遠鏡
今から約4億3500万年前 (オルドビス紀) に起こった生物の大絶滅は、天の川銀河内で起こったGRBが原因であるとする説があります
http://www.naoj.org/Pressrelease/2010/07/20/j_index.html
Subaru Telescope Detects Clues for Understanding the Origin of Mysterious Dark Gamma-Ray Bursts
http://www.naoj.org/Pressrelease/2010/07/20/index.html
Black holes + dark matter = light
TWO of the darkest things in the universe may be making light - or at least, radiation.
The team calculate that the effect could account for the frequencies of gamma rays measured by Fermi coming from the black hole at the centre of the galaxy Centaurus A (arxiv.org/abs/1008.2230). However, the frequency spectrum of gamma rays from another galaxy, Messier 87, does not match their predictions.
http://www.newscientist.com/article/mg20727753.800-black-holes--dark-matter--light.html
Phys. Rev. D 57, 1299 (1998): Multi-GeV photons from electron–dark-matter scattering near active galactic nuclei
http://prd.aps.org/abstract/PRD/v57/i2/p1299_1
[1008.2230] Probing Dark Matter with AGN Jets
http://arxiv.org/abs/1008.2230
DNA-decorated graphene sensor
DNA helps turn graphene into a chemical sensor - physicsworld.com
http://physicsworld.com/cws/article/news/43643
royalsociety.tv - The Royal Society
http://royalsociety.org/royalsociety.tv/
Two Chinese Satellites Rendezvous in Orbit | Universe Today
In January 2007, China destroyed a derelict satellite with a ballistic missile, which the US also did in February 2008.
Data from the US military shows that two Chinese satellites likely performed multiple rendezvous 600 kilometers above Earth this summer, and may have even bumped into each other. The rendezvous have taken place over the past several months, between two Chinese "Shi Jian" (Practice) spacecraft, SJ-06F and SJ-12, that are officially listed as science satellites.
http://www.universetoday.com/72522/two-chinese-satellites-rendezvous-in-orbit/
IceCube neutrino observatory nears completion
http://www.sciencedaily.com/releases/2010/08/100831141053.htm
IceCube Neutrino Observatory Nears Completion - Space News - redOrbit
http://www.redorbit.com/news/space/1910773/icecube_neutrino_observatory_nears_completion/index.html
Black holes and spin offs: Event details - physicsworld.com
The popular notion of a black hole "sucking in everything" from its surroundings only happens very close to a black hole. Far away, the pull of the black hole is identical to that of anything else of the same mass.
Event starts at 6.30pm and finishes at 7.30pm.
Visit our video archive at royalsociety.tv"
http://physicsworld.com/cws/event/15871
NASA - Cluster Collisions Switch on Radio Halos
http://www.nasa.gov/mission_pages/chandra/multimedia/photo10-112.html
Cluster collisions switch on radio halos
http://www.physorg.com/news202399852.html
With new technique, astronomers find potassiumカリウム in giant planet's atmosphere
http://www.physorg.com/news202476072.html
Jumping from two and three particles to infinitely many - Physics
http://physics.aps.org/articles/v3/74
Creating awesome CSS3 animations
http://mir.aculo.us/2010/08/27/creating-awesome-css3-animations/
動くCSS3海賊 |マイコミジャーナル
http://journal.mycom.co.jp/articles/2010/08/31/css3-pirate-animation/
JavaScriptのモジュール化を考える -RequireJSとJuicer |マイコミジャーナル
http://journal.mycom.co.
