Nice to meet you <a href=" http://jillmillerzimon.com/licengsui-vs-hajar-jahanam.pdf ">harga hajar jahanam 2013</a> Dark energy, U of I research scientist Robert Gruendl said, is "the name for something we don't understand. What the survey is trying to do is characterize the ... acceleration we are seeing so we can place limits on what may be causing it."