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Space Launch System - Wikipedia
Space Launch System (SLS) - NASA
SLS Fact Sheets - NASA
Space Launch System - NASA
Nasa's giant SLS rocket: A guide - BBC
Space Launch System - The Boeing Company
SLS: First view of Nasa's assembled 'megarocket' - BBC
NASA launches Artemis 1 moon mission on powerful SLS rocket
SLS: First view of Nasa's assembled 'megarocket' - BBC