Ask Ethan: Could The Shape Of Our Universe Be Closed Instead Of Flat? The shape of our Universe has long been recognized to be flat. But that isn’t the only possibility. – Ethan Siegel March 28, 2020spacehistoryscoper https://medium.com/starts-with-a-bang/ask-ethan-could-the-shape-of-our-universe-be-closed-instead-of-flat-bd5708865408