NASA-UAP-D010：水星-宇宙神9号音频片段（1963年5月15日）
NASA-UAP-D010, Mercury Atlas 9 Audio Excerpt, May 15, 1963
一份1963年5月15日水星-宇宙神9号（Faith 7）任务的NASA音频片段。包含宇航员Gordon Cooper与任务控制中心之间关于在航天器附近观察到异常物体的通信。
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Approximately one hour and 41 minutes into the final and longest flight of Project Mercury, Mercury-Atlas 9 mission (MA-9) Faith 7 Pilot L. Gordon Cooper Jr. notes that he sees “John’s fireflies,” referring to John Glenn’s term from the Mercury-Atlas 6 mission. NASA later determined that the “fireflies” are attributable to frozen condensation separating from the spacecraft body. The white, green-hued appearance of this phenomenon results from sunlight reflecting off frozen condensation.
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原始文件托管于美国战争部服务器，链接来自 war.gov。