3 ms·
> Military satellites often cost a few billion This needs a reference.
by forgotpwtomain 10y ago
> Military satellites often cost a few billion
This needs a reference.
- mnl 10y agoNot really, but here you go: https://en.wikipedia.org/wiki/KH-11_Kennan https://en.wikipedia.org/wiki/KH-11_Kennan And no, you can't make cheap primary mirrors (in a garage).