What if Apollo/Saturn Had never been Cancelled?

[Blackstar]

That looks like an OSO satellite being serviced. As I recall, building and launching an OSO ran to something like 23 million in then-dollars. Would launching an expendable Apollo CSM/S1B mission been cheaper than just building and launching a new satellite?

Thanks for the memories, BTW. I worked in Larry Peterson's lab at UCSD back when I was an undergrad and it's fun to see this blast from the past.

I think this was just a concept study, not intended to be an actual servicing proposal. But I know nothing about it.