Depending on how you define 'the universe' it could be infinite (space) or finite (space containing something other than light/energy).

I can imagine a finite volume in which all matter exists. Maybe all matter is swirling in that space due to some energy phenomenon (gravity). Maybe it's constantly expanding into space....which is infinite even it's a void.

It pointless pondering a finite universe (space) because there's always more space on the other side of any line you can describe, even if there aren't fine people on both sides of that line.

Two years ago my sister said to me, "If I don't make it to Christmas, I'll see you in the stars.

Last year she opened her eyes and said "Sano, Sh!t happens."

Then she left. Matter devoid of energy.

Her energy?... traveling outward through the galaxies?... chasing Starman's roadster? Nah. Her matter? Recycling.