Since most stars are millions of light years away, when we look into the night sky, we are seeing the past millions of years ago. amirite?

Ghosts

Yep! You might find Carl Sagan's _Cosmos_ interesting. I'll bet it's all free on YouTube.

The stars we can see are much closer than that, like a few hundred/thousand light-years.

Look below and you're standing on your ancestor's stardust

Bro you are in highschool and just learned that didn't you? Same

Read ‘A Short History of Nearly Everything' by Bill Bryson