Home›Articles›Who earned astronaut wings in the X-15ArticleWho earned astronaut wings in the X-15ArticlesConnectionsSourcesComments (0)Reader Challenges (0)ConnectionsArticle OnNorth American X-15, Spacecraft Well-attested SourcesNorth American X-15 (Wikipedia)Lead sectionQuote, Lead sectionOf these, 8 pilots flew a combined 13 flights which met the Air Force spaceflight criterion by exceeding the altitude of 50 miles (80 km), thus qualifying these pilots as being astronautsView the SourceAtlas Article VocabularyComments (0)No comments yet. Be the first to share a thought.Sign in to join the discussion.Reader Challenges (0)No disputes yet. Spotted an error or a better source? Open the first one.Sign in to dispute this or suggest a correction.