We don't see what is happening right now

So, isn't it strange that when we look into the sky, what we are seeing, is just something that has already happened?

We all know that stars are millions of years away from our planet. That being said, if we see a star from our sky, we are seeing what happened with that star millions or billions of year lights away.

1 year light = 9232406099999.992 km.

Some astronomers say that the farthest they can see is about 18,000,000,000 light years away. Do you get how much that is?

So, all we think we know about galaxies, stars, planets and different things in the universe, are things that happened billions of years ago. It is not happening now, it has already happened, so looking into the sky... is looking into the past.

So, I suppose we don't know too much and that means our knowledge is very old.

On earth I guess, if we see something a few meters away, that something's light should take a while until it reaches our eyes, because our eyes see light.

If we could see things many km away, many many, we would be seeing it delayed. It would already have happened there and we would have been thinking it is happening right now.

So wait, we are seeing right now something that happened let's say... 15.000.000 light years away. Ok, the light of that object has already traveled 15.000.000 light years. But, the universe is expanding (gets bigger and bigger all the time, like an explosion). So since the 15.000.000 light years the light of the object took to arrive to Earth, it has already moved even more. How fast and how much? I don't know, but who knows, 10x more? 50x? 10.000x?

But... Maybe, we are also moving at a similar speed? Everything in the universe moves, but to different directions? Same direction? Maybe not. I don't know :)

So... from what I understand, we see the past.