01:32DiscoveryDark Matterبی بی سی افغانستان (برنامه های دری) Duration: 27 minutes Thu 28th Jan 2010, 01:32 on BBC World Service OnlineAvailable for over a yearMost of our universe is missing. Scientists have called the stuff they can't find dark matter. Sue Nelson investigates.GenresFactualScience & NatureFormatsDocumentariesBrandDiscovery Source: BBC Online
