فيديو من ناسا يشرح نهاية العالم

w=480&mos=0&debug%5FvideoId=r8Oz9VVh4mM&videoFps=0&sd=BD075E747HH1315933876838875&debug%5FsourceData=BD075E747HH1315933876838875&debug%5FplaybackQuality=medium&sourceid=r&stageFps=10&rendering=software&fmt=34&decoding=null&h=360&vh=360&nsiabbl=57834&csipt=watch5&referrer=http%253A%252F%252Fwww%2Egoogle%2Ecom%2Eeg%252Furl%253Furl%253Dhttp%253A%252F%252Fwww%2Eyoutube%2Ecom%252Fwatch%25253Fv%25253Dr8Oz9VVh4mM%2526rct%253Dj%2526sa%253DX%2526tbs%253Dclir%25253A1%2526ei%253D2YxvTpKON9D14QSu44WuCQ%2526ved%253D0CC8Q2wQ%2526q%253DElinin%2526usg%253DAFQjCNGwen69Dx29GETBUGHXwZNnhshScg&volume=100&vq=auto&debug%5Fdate=Tue%20Sep%2013%2019%3A13%3A26%20GMT%2B0200%202011&nsivbbl=178228&vid=dWxh3SAvcocZBVFvsU7K5eE87tSZj2uvC&droppedFrames=34&sendtmp=1&sdetail=p%253Awww%2Egoogle%2Ecom%2Eeg%252Furl&screenw=1280&hl=en%5FUS&screenh=800&cfps=0&playerw=640&debug%5FflashVersion=WIN%2010%2C1%2C53%2C64&el=detailpage&nsidf=34&scoville=1&fexp=904539&pd=22%2E857999999999997&playerh=390&plid=AASs1br41msTglP4&cr=US&md=1&fs=0&vw=480