Talk:X-15 Flight 87
Latest comment: 2 years ago by Telecineguy in topic U.S. definition of space
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U.S. definition of space
editFirst altitude of 86.7 km (53.9 mi) surpassing the U.S. definition of space. This notability is here.Telecine Guy (talk) 02:32, 13 October 2022 (UTC)