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In ancient religions that covered every aspect of human activity (& existence), Astronomy was an essential part. Stars and planets (as well as Sun & Moon) were treated as Gods. All the constellations are the lifted versions of Greek mythology that would have been a 'religion' if Christianity spared it.

Religion is primarily an attempt to give a reason "Why" for events in people's lives.

Part of that search for why is the patterns of stars in the sky and their repetition which is often matched to repetitions on earth - the seasons and the flooding of rivers.

They all are left overs from ancient times. When science & education explained the unknown(s) that early humans trembled from, the dark ages flew out the window.

It didn't really since most religions were formed prior to any significant discoveries in astronomy. It's more the other way since some religions tried to suppress astronomical discoveries.

Astronomy is what religion is all about as the gods came down o Earth from the heavens.

christianity

God created the earth, light, and the heavens.