

Personally when I install some software I generally look at popularity (like stars if the code is hosted on Github), whether an audit has recently happened, it is recommended by someone I trust, and whether the permissions it needs are reasonable (I’m on Silverblue so I only install Flatpaks)
When I used to use Arch I also looked at the pkgbuild beforehand since they’re generally fairly small en very human readable. I also looked at popularity there and whether the developer maintained an Arch package. But that obviously doesn’t say anything about the code itself.
I definitely don’t consider myself non-techy since I’m doing an an engineering masters with a CS track but those things shouldn’t require any programming knowledge.
But I think most of the more common users don’t really care and install the packages they need without thinking too much about it. Unless the source seems very untrustworthy.
Edit: you can never truly be certain that a project’s code is safe. You can only have soft guarantees. Albeit some like formal verification are harder than others like project popularity.
Data processing in space can be useful, albeit not in the way that Musk seems to sell it. I spoke with some people from a space startup (edgx) at a jobfair in Belgium half a year ago.
Their thing was that they did some data processing in space to cut down on bandwidth (so this is specifically for applications where satellites are a necessary component). I also remember specifically asking them about cosmic rays and they told me it’s definitely manageable because their computers fly in LEO. (They already have a computer in space)