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The SR-91 Aurora aircraft https://youtu.be/Y9MaP-J5ps8 These are the most mysterious airplanes, jets and space planes flying today. 5. X-47b stealth aircraft, 4. tr-3b astra 3. rq-180 aircraft, 2. x-37b spacecraft 1. The SR-91 Aurora aircraft Aurora also known as SR-91 Aurora is the popular name for a hypothesized American reconnaissance aircraft, believed by some to be capable of hypersonic flight at speeds of Mach 5+. According to the hypothesis, Aurora was developed in the 1980s or 1990s as a replacement for the aging and expensive SR-71 Blackbird. The outside world uses the name Aurora because a censor’s slip let it appear below the SR-71 Blackbird and U-2 in the 1985 Pentagon budget request. Even if this was the actual name of the project, it would have by now been changed after being compromised in such a manner. Music: Chee Zee Cave - Video Classica by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100685 Artist: http://incompetech.com/,医学部受験生を応援します! 当サイトは医師を目指す医学部受験生のための「医学部受験生のための情報サイト」の姉妹サイトです。

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