早！詩人Thomas Jefferson說：＂The tree of liberty must be refreshed fromtime to time, with the blood of patriots and tyrants.It is its natural manure...＂@美國駐港總領事館展开全文
Saturn's north polar hexagon basks in the Sun's light now that spring has come to the northern hemisphere. Many smaller storms dot the north polar region and Saturn's signature rings, which appear to disappear on account of Saturn's shadow, put in an appearance in the background.展开全文
#The Great Meteor Procession of 1913#One hundred years ago today the Great Meteor Procession of 1913 occurred, a sky event described by some as "magnificent" and "entrancing" and which left people feeling "spellbound" and "privileged".展开全文
President Barack Obama salutes as he and U.S. Senator Charles Ellis "Chuck" Schumer (D-NY) depart the White House for Capitol Hill and the swearing-in of Obama as the nation's 44th President, Monday, Jan. 21, 2013, in Washington 小马这敬礼好不标准~~@美國駐港總領事館展开全文
Apollo 11 astronaut Buzz Aldrin salutes as NASA Administrator Charles Bolden looks on during a wreath laying ceremony as part of NASA's Day of Remembrance ...2013.2.1展开全文
这张由NASA公布的2001年-2006年全美PM2.5指数的平均值，美国目前的环境也不容乐观，个别地区的PM平均值已经达到惊人的20μg!! U.S. satellite-derived map of PM2.5 averaged over 2006-20010. Credit: Dalhousie University, Aaron van Donkelaar..展开全文
#Armstrong Burial at Sea# U.S. Navy, USS Philippine Sea, wife of Neil Armstrong, commit the cremated remains of Neil Armstrong to sea during a burial at sea service held onboard the USS Philippine Sea (CG 58), Friday, Sept. 14, 2012, in the Atlantic Ocean.展开全文
