The Sun Generates Lots Of Heat
There are so many things that can disrupt communications. The WEB/Internet is the largest form of communications and that would be a major disruption if people were unable to connect and communicate.
A large solar flare could do just that. Knock out communications and that would be most disruptive. Too bad the space budget is not large enough to cover the vast size of space.
Thoughts & Ideas,
It’s very dangerous to put astronauts on a moon base where there’s radiation, solar flares and micro meteorites. It’d be much better to put robots on the moon and have them mentally connected to astronauts on the Earth. Michio Kaku