ツワブキ（石蕗、艶蕗。イシブキ、ツワともいう。キク科）。2010年11月3日、堺市・鳳公園で撮影。
Leopard plant, green leopard plant, or ligularia; botanical name, Farfugium japonicum; family, Asteraceae. The photo was taken on November 3, 2010, at Ōtori Park, Sakai.
From tweets of yesterday (edited by rephrasing, adding words, etc.)
About Astrophysics
"Space telescope [Herschel] spots 'invisible' galaxies," New Scientist (November 4, 2010). Reference: "The Detection of a population of submillimeter-bright, strongly lensed galaxies." Science Vol. 330, p. 8005 (November 2010). [Retweeted by @gtsouza Glaucio Souza]
"Comet Hartley 2 fly-by sets NASA astir," New York Times (November 4, 2010). —A close approach image of the comet is attached.
About Books
"Weighty matters." Andy Parker reviews Ian Sample's book, Massive: The Hunt for the God Particle. physicsworld (November 2, 2010).
"Between the lines." Reviews of books on the physics of music, the dwarf planet Pluto and the history of noble gases. physicsworld (November 2, 2010).
About History of Physics
"Bronx physics." Robert P. Crease on why one New York school has produced seven Nobel-prize winners. physicsworld (November 2, 2010).
About Particle Physics
"When muons collide." A new type of particle collider known as a muon collider considered a wild idea a decade ago is winning over skeptics as scientists find solutions to the machine's many technological challenges. Symmetry Vol. 7, issue 5, (October 2010) [Retweeted by @gtsouza Glaucio Souza]
"LHC gears up to create mini big bangs," The ALICE experiment should have its lead collisions by the weekend. physicsworld (November 4, 2010).
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