Hi everyone! Today I want to start asking
you a question: how big is the universe? “Huge” many of you will answer. And that’s true! Our universe is enormous, maybe
even infinite. And from our small
planet, we can only see a tiny portion of it. So, if it is so big, then it
should be reasonably full of life, right? I mean, statistically speaking is
very improbable that ours is the only planet in the entire universe in which
life flourished. There must be others.
