John Glenn and Scott CarpenterPrime astronaut John Glenn and backup pilot Scott Carpenter check over notes after a simulated flight prior to the Mercury-Atlas 6 missionImage Credit: NASA Facebook Pinterest X LinkedIn Email https://www.nasa.gov/image-detail/19-62-ma6-27/Copy URL to clipboard> DownloadShareTagsFormer AstronautsJohn GlennKennedy Space CenterNASA HistoryProject MercuryWebMod GrandfatheredImage CreditNASASize3000x2084px