Why did God create the universe?

[Hoc est Corpus]

Back to the actual question posted here....
God created the universe because he is a God of love and community. He was with the Father, the Son, and the Holy Spirit and out of the fullness of that relationship created the universe to share in his love and community.

Really? Then why create planets, stars and galaxies that we can't even see? In fact, why create anything outside of our planet and sun? Why would anything else be necessary?

As far as I know we can see quite a few stars and galaxies. But, beyond that God created the physical universe and the laws that make it up. We need these laws and material to exsist. God first created "star stuff" so that he could form our galaxy, planet, and us from that material.

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Back to the actual question posted here....
God created the universe because he is a God of love and community. He was with the Father, the Son, and the Holy Spirit and out of the fullness of that relationship created the universe to share in his love and community.

Uh huh. How did he do it? Creating energy after all violates the laws of nature.
Also, how do you know god even exists let alone being responsible for creating the universe?

God also created the laws of the universe. I wouldn't say I "know" God exsists, but I think he does. I think he exsists because when I look around nature and study science I think it points toward a creator. The universe started in a very low entropy state. That low entropy state had to start somewhere because it is only getting higher.