The radiation left over from the Big Bang is the same as that in your microwave oven but very much less powerful. It would heat your pizza only to minus 271.3*C - not much good for defrosting the pizza, let alone cooking it.

I'd say I don't believe in God, but I'm afraid He might hear me.

If what we regard as real depends on our theory, how can we make reality the basis of our philosophy? But we cannot distinguish what is real about the universe without a theory. It makes no sense to ask if it corresponds to reality, because we do not know what reality is independent of a theory.

The real challenge is to work out what aliens might actually be like.

If everything in the universe depends upon everything else in a fundamental way, it might be impossible to get close to a full solution by investigating parts of the problem in isolation.

If the government is covering up knowledge of aliens, they are doing a better job of it than they do at anything else.

I think the human race has no future if it doesn't go into space.