But it runs VxWorks, not macOS…
At this point I’m a proud IBMer. But then S/360 powered the original Apollo programme… 
A radiation-hardened version of the 1802 processor used in my first computer was used in Hubble, Galileo, Magellan, etc. and was always a source of pride.
G3 iMac! G3 iMac! G3 iMac! 
Didn’t they use a Raytheon computer (in the command and lunar modules)? IBM certainly was used in the Space Shuttle.
IBM S/360s on the ground at mission control.
On-board computers were designed by MIT and built by Raytheon.
Everything was S/360 back then. 
I was thinking on the on-board computers. No way you could fit a S/360 into the module.
Well, DEC and HP too. HP released the 2100 in 1966, and I actually worked on some in the early 80s.
I know. I just like the notion of having 360ies running everything. Even if there were others, S/360 was THE mainframe. What I missed is the first wave of “home computers” (MITS Altair 8800).
If I recall, the original luggable MacBook was used at some point in certain space missions. The longevity of the battery was cited as the reason.
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JJW
Just looked it up: a lot of Linux is being used (ISS, SpaceX).