Pretty sure one should explain why these have not been earned rather than explaining how they are earned.
I think the following video demonstrates the above fairly well.
Not only have I operated spacecraft simulators, I used my mad programming skills to create some of them.
The recipient of the rocket scientist badge should have earned these along the way.
I and II were the typical youthful playing around. III may be iffy – I was using liquid oxygen (which is pretty close to LN2 temps) and I was more interested in the “exothermic badge” than freezing, but I was fascinated to see the freezing part.
I own a telescope and enjoy viewing the sky, for the rest… Avast, give me lots of rum matey and maybe I’ll talk about them.
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Way back when, I designed and built some robots for a few companies.