Which branch of earth science includes the study of stars

ok uwu  this is my song p-pls enjoy *blushes* O///O

Explanation:

In the night I hear 'em talk

The coldest story ever told

Somewhere far along this road

He lost his soul to a woman so heartless

How could you be so heartless?

Oh, how could you be so heartless?

How could you be so, cold as the winter wind when it breeze, yo

Just remember that you talkin' to me though

You know need to watch the way you talkin' to me, yo

I mean after all the things that we've been through

I mean after all the things we got into

Hey yo, I know of some things that you ain't told me

Hey yo, I did some things but that's the old me

And now you wanna get me back and you goin' show me

So you walk around like you don't know me

You got a new friend, well I got homies

But in the end it's still so lonely

In the night I hear 'em talk

The coldest story…