PHOTOENGRAVINGS: SOVFOTO/ UNIVERSAL IMAGES GROUP/ SHUTTERSTOCK (SPUTNIK); OMIKRON/SCIENCE SOURCE/GETTY IMAGES
(EXPLORER); GENE J. PUSKAR, AP/ SHUTTERSTOCK (CAPSULE); SPUTNIK/SCIENCE PHOTO LIBRARY (LUNA 9); NASA (ALDRIN) 55
michael s
(Michael S)
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