俯瞰：1966年左右的零重力设施

This tunnel view looking up from Level 5 is of the Zero Gravity Facility at Lewis Research Center, now known as John H. Glenn Research Center at Lewis Field, and was taken in Cleveland, Ohio, on Sept. 12, 1966. The tower dropped 460 feet and allowed scientists to perform 5.18 seconds of microgravity research. By comparison, the Washington Monument is 555 feet tall.

Image Credit: NASA

这张从5楼俯瞰的隧道图是刘易斯研究中心的零重力设施，现为刘易斯场的约翰·H·格伦研究中心，于1966年9月12日在俄亥俄州克利夫兰拍摄。从该塔下降460英尺，使科学家能够进行5.18秒的微重力研究。相比之下，华盛顿纪念碑高555英尺。

图片来源：美国宇航局