applications are installed with flatpak - basically little containers that contain everything a program needs. sort of like docker
so normally if you wanna install something - let's say minecraft. you would also need to install java. the flatpak for minecraft would have java inside of it so it can be run in its own little container and you don't need to install either
Presumably there would be a cache on Mars of !news@beehaw.org so that anybody who wants to view it would not have to wait 10 minutes.. they would get the cached update - so they would immediately see the community as it was 10 minutes ago.
This cache would be continuously updating so to the user on Mars, there actually isn't that much disruption. Every time they check, there would be updates.
10 minutes or even 40 minutes is not that long in the grand scheme of things. We start talking about lightyears is when I think it starts to break down.
I've been using the same distro for at least 4 years now and I haven't ever had any issues. Fedora on a desktop at home. It's very stable. You don't even need to know too much... although obviously knowing your way around the terminal and knowing some basic things about Linux helps