What is your opinion about such an event hitting the earth?
Not relevant to my interests.
Is the bitcoin network going to survive?
Yes.
What about the human infrastructure?
It will be fine. The sun has an eleven year cycle of activity which we are now at the peak of, it has never been a problem before so there's little reason to worry now.
This thread has nothing to do with bitcoin, which contrary to popular belief, doesn't even need the internet or computers or electricity to survive.