Destin from SmarterEveryDay analyzes a cool bit of engineering on the International Space Station: the system whereby the cupola windows, through which everything is photographed and filmed, are opened and closed. It turns out that the shutters are actually activated through two holes in the shuttle skin itself, sealed only with two small rubber-O rings! What would happen if one of them failed? The question is answered in the following video. Note that 6 minutes in, our Official Website Astronaut™, Samantha Cristoforetti, demonstrates the windows on the Station, and gives Destin’s site a plug.
I’m sure we’ll all miss AstroSam when she returns to Earth in early June (she was supposed to be back May 13, but a transport vehicle crash delayed her return).