On August 17, 1961, Glenn underwent disorientation testing at the U.S. Navy's School of Aviation Medicine, including this exam where he is seated in a rotating chair.
February 17, 2012 4:00 AM PST
Photo by: NASA
| Caption by: Daniel Terdiman
Conversation powered by Livefyre
Manage updates with the Download App
%20-%20CNET%20News&srcUrl=http://news.cnet.com/2300-13772_3-10011353-12.html&x_breadcrumb=10784:13772&x_arw_bkts=MAD:first_impression){kind=small}
