Cosmic Radiation knows where We are?

Another contradiction in relativity

They cant account that the Big Bang is over, and still it sends deadly
cosmic radiation against us.

How dows the cosmic radiation knows where we are, in order to hit us
from perpendicular direction?

If this were the case, a cosmic radiation particle will hit another
cosmic radiation particle in empty space, and annihilate each other.
So there will be no more cosmic radiation very fast. And since the
alleged big bang was long time ago, our vacuum should be empty of
cosmic particles

What kind of vacuum is that which is not empty of cosmic radiation
particles?

What kind of dark matter and energy is that which is not empty of
cosmic radiation particles?

Does the pyramids i Egypt have been build in order to protect us from
these particles?

Why they dont want to answer these questions?
.