简介:美火星探测器成功升空前往火星探索生命—NASAon10Junelaunchedthefirstoftwogolf-cart-sizeroversthatwillrambleacrosstherocky,redsoilofMarsanddrillforevidencethattheRedPlanetoncehadenoughwatertosupportlife.Therover,namedSpirit,liftedoffaboardaBoeingDeltaⅡrocketontheseven-monthjourneytoMars.Movingonsixwheels,theroverwillactasroboticgeologists.Itisequippedwithapanoramiccamera.PreviousmissionshaveshownMarshadwaterinthepast,butscientistswanttofindouthowlongthewaterwasthereandinwhatquantities.ScientistsbelievethewatermayshowthatMarsoncewasabletosupportlife.
简介:19661966年5月,中共中央政治局扩大会议通过《五一六》通知,“文化大革命”自此正式开始,中国进入长达10年的动乱时期。其间,国家政治生活与经济建设受到了空前的危害与破坏。图为呼喊“革命”口号,通过天安门广场的群众游行队伍